CN112447132B

CN112447132B - Terminal device, display control method, display control device, and computer-readable storage medium

Info

Publication number: CN112447132B
Application number: CN201910798603.3A
Authority: CN
Inventors: 陈朝喜
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2022-04-08
Anticipated expiration: 2039-08-27
Also published as: CN112447132A

Abstract

The disclosure relates to a terminal device, a display control method and a display control device, and belongs to the technical field of display. According to the embodiment of the disclosure, when the proximity sensor emits infrared light, the control circuit controls at least one of the display parameters of the OLED display panel and the light emitting frequency of the proximity sensor, so that a first brightness difference between an irradiation area of the OLED display panel irradiated by the infrared light and a non-irradiation area around the irradiation area is smaller than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference which is a luminance difference between an irradiated region irradiated with infrared light and a non-irradiated region when the irradiated region and the non-irradiated region are driven with the same data voltage, and the data voltage of the non-irradiated region corresponding to the first luminance difference is the same as the data voltage of the non-irradiated region corresponding to the second luminance difference. That is, the luminance value of the irradiation region is reduced, so that the display difference between the irradiation region and the non-irradiation region is reduced, and the display effect is improved.

Description

Terminal device, display control method, display control device, and computer-readable storage medium

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a terminal device, a display control method, a display control apparatus, and a computer-readable storage medium.

Background

A full-screen has become a mainstream trend of development of a mobile terminal device, and in order to increase a screen occupation ratio, an optical sensing device such as a distance sensor is generally disposed below an Organic Light Emitting Diode (OLED) display panel. The distance sensor determines the distance by emitting infrared light and from the received infrared light reflected by an illuminated object, such as a user's hand and/or face. Because the infrared light has larger energy, in the process of passing through the OLED display panel, the illuminated pixels of the OLED display panel can be excited to emit light, so that bright spots are generated on the OLED display panel, and the display effect of the OLED display panel is influenced.

Disclosure of Invention

The present disclosure provides a terminal device, a display control method, a display control apparatus, and a computer-readable storage medium, which can reduce or prevent display abnormality of an irradiation area irradiated with infrared light emitted from a distance sensor, and improve a display effect.

According to a first aspect of the embodiments of the present disclosure, there is provided a terminal device, including:

an Organic Light Emitting Diode (OLED) display panel including a transparent display region;

the distance sensor is positioned on the back surface of the OLED display panel and used for emitting infrared light, and the infrared light emitted by the distance sensor can penetrate through the transparent display area;

a control circuit for controlling at least one of a display parameter of the OLED display panel and a light emission frequency of the distance sensor when the distance sensor emits infrared light such that a first luminance difference of an irradiated area of the OLED display panel irradiated with the infrared light and a non-irradiated area located around the irradiated area is less than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference that is a luminance difference between an irradiated region irradiated with infrared light and the non-irradiated region when the irradiated region and the non-irradiated region are driven with the same data voltage, the data voltage of the non-irradiated region corresponding to the first luminance difference is the same as the data voltage of the non-irradiated region corresponding to the second luminance difference, and the irradiated region and the transparent display region overlap at least partially.

In a possible implementation manner of the first aspect, the OLED display panel includes a fixed display area, the fixed display area is used for displaying graphics with fixed positions and fixed colors, and the irradiation area and the non-irradiation area are both located in the fixed display area.

In a possible implementation manner of the first aspect, the fixed display area is used for displaying at least a part of a battery display graph or a signal intensity graph.

In a possible implementation manner of the first aspect, the fixed display area is a low power display area of the battery display graph, or the fixed display area is a display area of a smallest signal bar of a plurality of signal bars of the signal intensity graph.

In a possible implementation manner of the first aspect, the predetermined value is equal to 0.

In a possible implementation manner of the first aspect, the display parameter includes a data voltage, and the control circuit is configured to control a data voltage corresponding to a pixel of the fixed display area to be 0 when the distance sensor emits infrared light, so that the graphic in the fixed display area is black.

In a possible implementation manner of the first aspect, the display parameter includes a first data voltage and a second data voltage, the control circuit is configured to provide the first data voltage to the pixels of the irradiation region and provide the second data voltage to the pixels of the non-irradiation region when the distance sensor emits infrared light, the first data voltage is smaller than the second data voltage, and a difference between a gray value corresponding to the pixels of the irradiation region driven by the first data voltage and a gray value corresponding to the pixels of the non-irradiation region driven by the second data voltage is smaller than or equal to a predetermined value.

In a possible implementation manner of the first aspect, the display parameter includes a refresh frequency, and the control circuit is configured to control at least one of the refresh frequency of the irradiation region and a light emitting frequency of the distance sensor, so that when the distance sensor emits infrared light, at least some pixels of the irradiation region do not emit light due to refresh reset.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for display control, which is applied to a terminal device, the terminal device includes an organic light emitting diode OLED display panel and a distance sensor, the OLED display panel includes a transparent display area, the distance sensor is located at a back surface of the OLED display panel, the distance sensor is configured to emit infrared light, and the infrared light emitted by the distance sensor can penetrate through the transparent display area;

the method comprises the following steps: controlling at least one of a display parameter of the OLED display panel and a light emitting frequency of the distance sensor when the distance sensor emits infrared light such that a first luminance difference of an irradiated area of the OLED display panel irradiated with the infrared light and a non-irradiated area located around the irradiated area is less than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference that is a luminance difference between an irradiated region irradiated with infrared light and the non-irradiated region when the irradiated region and the non-irradiated region are driven with the same data voltage, the data voltage of the non-irradiated region corresponding to the first luminance difference is the same as the data voltage of the non-irradiated region corresponding to the second luminance difference, and the irradiated region and the transparent display region overlap at least partially.

In another possible implementation manner of the second aspect, the display area of the OLED display panel includes a fixed display area, the fixed display area is used for displaying graphics with fixed positions and fixed colors, and the irradiation area and the non-irradiation area are both located in the fixed display area.

In another possible implementation manner of the second aspect, the fixed display area is used for displaying at least a part of a battery display graph or a signal intensity graph.

In another possible implementation manner of the second aspect, the fixed display area is a low power display area of the battery display graph, or the fixed display area is a display area of a smallest signal bar of the plurality of signal bars of the signal intensity graph.

In another possible implementation manner of the second aspect, the predetermined value is equal to 0.

In another possible implementation manner of the second aspect, the controlling the display parameter of the OLED display panel includes: when the distance sensor emits infrared light, controlling the data voltage corresponding to the pixels of the fixed display area to be 0, so that the graph in the fixed display area is black.

In another possible implementation manner of the second aspect, the controlling the display parameters of the OLED display panel includes: when the distance sensor emits infrared light, the first data voltage is supplied to the pixels of the illuminated area, and the second data voltage is supplied to the pixels of the non-illuminated area, the first data voltage being smaller than the second data voltage.

In another possible implementation manner of the second aspect, the method further includes acquiring a grayscale image of the fixed display area when the distance sensor emits infrared light and the irradiated area and the non-irradiated area are driven with the same data voltage; acquiring a gray value of the irradiation area and a gray value of the non-irradiation area according to the gray image of the fixed display area; and determining the preset value according to the gray value of the irradiation area and the gray value of the non-irradiation area.

In another possible implementation manner of the second aspect, the display parameter includes a refresh frequency, and the controlling the display parameter of the OLED display panel includes controlling the refresh frequency of the irradiation area, so that when the distance sensor emits infrared light, at least some pixels of the irradiation area do not emit light due to refresh reset.

According to a third aspect of the embodiments of the present disclosure, there is provided a display control apparatus, which is suitable for a terminal device, where the terminal device includes an organic light emitting diode OLED display panel and a distance sensor, the OLED display panel includes a transparent display area, the distance sensor is located at a back surface of the OLED display panel, the distance sensor is configured to emit infrared light, and the infrared light emitted by the distance sensor can penetrate through the transparent display area;

the display control device comprises a control module, a display control module and a display control module, wherein the control module is used for controlling at least one of display parameters of the OLED display panel and light-emitting frequency of the distance sensor when the distance sensor emits infrared light, so that a first brightness difference between an irradiation area of the OLED display panel irradiated by the infrared light and a non-irradiation area around the irradiation area is smaller than or equal to a preset value; the predetermined value is smaller than a second luminance difference that is a luminance difference between an irradiated region irradiated with infrared light and the non-irradiated region when the irradiated region and the non-irradiated region are driven with the same data voltage, the data voltage of the non-irradiated region corresponding to the first luminance difference is the same as the data voltage of the non-irradiated region corresponding to the second luminance difference, and the irradiated region and the transparent display region overlap at least partially.

In another possible implementation manner of the third aspect, the display area of the OLED display panel includes a fixed display area, the fixed display area is used for displaying graphics with fixed positions and fixed colors, and the irradiation area and the non-irradiation area are both located in the fixed display area.

In another possible implementation manner of the third aspect, the fixed display area is used for displaying at least a part of a battery display graph or a signal intensity graph.

In another possible implementation manner of the third aspect, the fixed display area is a low power display area of the battery display pattern, or the fixed display area is a display area of a smallest signal bar among a plurality of signal bars of the signal intensity pattern.

In another possible implementation manner of the third aspect, the predetermined value is equal to 0.

In another possible implementation manner of the third aspect, the display parameter includes a data voltage, and the control module is configured to control a data voltage corresponding to a pixel of the fixed display area to be 0 when the distance sensor emits infrared light, so that the graphic in the fixed display area is black.

In another possible implementation manner of the third aspect, the display parameter includes a first data voltage and a second data voltage, and the control module includes:

a first power supply module for supplying the first data voltage to the pixels of the irradiation area when the distance sensor emits infrared light;

a second power supply module for supplying the second data voltage to the pixels of the non-illuminated area when the distance sensor emits infrared light, the first data voltage being less than the second data voltage.

In another possible implementation manner of the third aspect, the control module further includes:

the first acquisition sub-module is used for acquiring a gray image of the fixed display area when the distance sensor emits infrared light and the irradiation area and the non-irradiation area are driven by the same data voltage;

the second acquisition submodule is used for acquiring the gray value of the irradiation area and the gray value of the non-irradiation area in the fixed display area according to the gray image of the fixed display area;

and the determining submodule is used for adjusting the display parameters of the irradiation area or the non-irradiation area according to the gray value of the irradiation area and the gray value of the non-irradiation area, so that the brightness difference between the display parameters of the irradiation area and the non-irradiation area of the fixed display area is smaller than or equal to a preset value.

In another possible implementation manner of the third aspect, the display parameter includes a refresh frequency, and the control module is configured to control at least one of the refresh frequency of the irradiation region and a light emitting frequency of the distance sensor, so that when the distance sensor emits infrared light, at least some pixels of the irradiation region do not emit light due to refresh reset.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a display control apparatus, which is suitable for a terminal device, where the terminal device includes an organic light emitting diode OLED display panel and a distance sensor, the OLED display panel includes a transparent display area, the distance sensor is located at a back surface of the OLED display panel, the distance sensor is configured to emit infrared light, and the infrared light emitted by the distance sensor can penetrate through the transparent display area;

the display control apparatus includes a processor:

a memory for storing processor-executable instructions;

wherein the processor is configured to:

controlling at least one of a display parameter of the OLED display panel and a light emitting frequency of the distance sensor when the distance sensor emits infrared light such that a first luminance difference of an irradiated area of the OLED display panel irradiated with the infrared light and a non-irradiated area located around the irradiated area is less than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference that is a luminance difference between an irradiated region irradiated with infrared light and the non-irradiated region when the irradiated region and the non-irradiated region are driven with the same data voltage, the data voltage of the non-irradiated region corresponding to the first luminance difference is the same as the data voltage of the non-irradiated region corresponding to the second luminance difference, and the irradiated region and the transparent display region overlap at least partially.

According to a fifth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium comprising at least one instruction which, when executed by a processor, performs the display control method of any one of claims 9-17.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the display parameter of the OLED display panel and at least one of the light emitting frequency of the sensor are controlled by the control circuit, so that a first brightness difference between an irradiation area irradiated by infrared light and a non-irradiation area around the irradiation area of the OLED display panel is smaller than or equal to a predetermined value, the predetermined value is smaller than a second brightness difference, the second brightness difference is the brightness difference between the irradiation area irradiated by the infrared light and the non-irradiation area when the irradiation area and the non-irradiation area are driven by the same data voltage, the data voltage of the non-irradiation area corresponding to the first brightness difference is the same as the data voltage of the non-irradiation area corresponding to the second brightness difference, namely, the brightness value of the irradiation area is reduced, so that the brightness difference between the non-irradiation area and the irradiation area is reduced, and the display difference between the irradiation area irradiated by the infrared light emitted by the distance sensor and the non-irradiation area is reduced, the display effect is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic diagram illustrating a partial cross-sectional structure of a terminal device according to an exemplary embodiment;

FIG. 2 is a diagram showing the relationship between the infrared light energy received by the receiving device and the distance between the object A and the OLED display panel;

fig. 3 is a schematic top view of a terminal device according to an exemplary embodiment;

FIG. 4 is a partially schematic illustration of a user interface in accordance with an exemplary embodiment;

FIG. 5 is a partially schematic illustration of another user interface in accordance with an exemplary embodiment;

FIG. 6 is a flow chart illustrating a display control method according to an exemplary embodiment;

fig. 7 is a flowchart illustrating another display control method according to an exemplary embodiment;

fig. 8 is a flowchart illustrating another display control method according to an exemplary embodiment;

fig. 9 is a flowchart illustrating another display control method according to an exemplary embodiment;

FIG. 10 is a block diagram illustrating a display control apparatus according to an exemplary embodiment;

fig. 11 is a block diagram illustrating a display control apparatus according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Fig. 1 is a schematic partial cross-sectional structure of a terminal device according to an exemplary embodiment, and as shown in fig. 1, the terminal device includes an OLED display panel 100 and a distance sensor 200. The distance sensor 200 is located at the back of the OLED display panel 100, where the OLED display panel 100 refers to a surface of the OLED display panel 100 opposite to a light emitting surface (i.e., a surface on which a screen is displayed).

The OLED display panel 100 includes a transparent display region 110 a; the distance sensor 200 is used to emit infrared light, and the infrared light emitted by the distance sensor 200 can pass through the transparent display area 110 a.

In the embodiment of the present disclosure, the display area of the OLED display panel 100 refers to an area of the OLED display panel 100 for displaying a picture, and the display area includes a plurality of pixels arranged in an array. For a terminal device such as a full-screen mobile phone, since the optical sensor is disposed on the back of the OLED display panel 100, the display area of the OLED display panel 100 generally includes a transparent display area 110a and a non-transparent display area, and the transparent display area 110a is opposite to the optical sensor to reduce or avoid affecting the operation of the optical sensor.

It should be noted that, in the embodiment of the present disclosure, the transparent display area 110a may not be completely transparent, for example, the transmittance of the transparent display area 110a is higher than that of the non-transparent display area 110a, as long as at least part of the infrared light emitted by the distance sensor 200 can pass through the transparent display area 110a, and the detection function of the distance sensor 200 is realized.

As shown in fig. 1, the distance sensor 200 includes a transmitting device 201 and a receiving device 202. The emitting device 201 is used to emit infrared light, and the receiving device 202 is used to receive the infrared light returned through the object a.

The terminal device may further include a control circuit electrically connected with the OLED display panel 100 and the distance sensor 200. The control circuit can judge whether an object approaches according to the energy value of the received infrared light and execute a series of instructions. For example, the OLED display panel is controlled to display or turn off according to the energy value of the received infrared light.

Illustratively, the energy value of the received infrared light may be obtained by a detection circuit including a photoelectric conversion circuit, a first-stage operational amplifier circuit, a low-pass filter circuit, a second-stage operational amplifier circuit, a sample-and-hold circuit, an analog-to-digital conversion circuit, and a register. And a photodiode array in the photoelectric conversion circuit converts the received infrared light signal into photocurrent. Because the photoelectric conversion circuit has parasitic resistance R and dark current I, the influence of the parasitic resistance R and the dark current I is corrected by setting a bias voltage through the primary operational amplifier circuit and the low-pass filter circuit. The photocurrent is then further amplified by a secondary operational amplifier circuit. Then the sampling hold circuit is used for sampling the photocurrent according to a certain frequency, and then the photocurrent is converted into binary data through the analog-to-digital conversion circuit and stored in a register. The processor reads the magnitude of the photocurrent from the register, which is indicative of the magnitude of the infrared energy received by the receiving device 202.

Fig. 2 is a graph showing the correspondence between the infrared light energy received by the receiving device and the distance between the object a and the OLED display panel 100, as shown in fig. 2, as the object a approaches the OLED display panel 100, the infrared light energy received by the receiving device gradually increases, and when the distance between the object a and the OLED display panel 100 is smaller than a certain value, the energy reaches a maximum value.

In actual use, the threshold value may be set as needed. The distance sensor 200 operates when a user receives or makes a call. When the infrared light energy received by the receiving device 202 is greater than the first threshold, it indicates that the distance between the terminal device and the user is short, and at this time, the OLED display panel 100 can be controlled to be turned off, so as to avoid misoperation of the user; when the infrared light energy received by the receiving device 202 is smaller than the second threshold, it indicates that the terminal device is far away from the user, and the OLED display panel 100 can be controlled to be turned on, so that the user can use the OLED display panel conveniently.

In some embodiments, the first threshold may be the same as the second threshold or may be different from the second threshold. For example, the first threshold is 95 and the second threshold is 45. That is, when the infrared energy received by the receiving device 202 is greater than the first threshold, it indicates that the distance between the terminal device and the user is less than 3cm, and at this time, the control screen is turned off, so as to avoid the misoperation of the user; when the infrared light energy received by the receiving device 202 is smaller than the second threshold, it indicates that the distance between the terminal device and the user is greater than 5cm, and the control screen is lighted up at this time, so that the user can use the terminal device conveniently.

In some embodiments, the Emitting device 201 may be a Light Emitting Diode (LED) or a Vertical-Cavity Surface-Emitting Laser (VCSEL), for example, having an emission wavelength of 850nm, 870nm, 880nm, 940nm, 980 nm. The receiving device 202 may be a photodiode array.

Referring to fig. 1, the distance sensor 200 may further include a substrate 203, and the substrate 203 is used to fix the transmitting device 201 and the receiving device 202.

Optionally, the distance sensor 200 further comprises a retaining wall 204. The emitting device 201 has an emission angle, i.e., infrared rays emitted by the emitting device 201 propagate within the emission region 11. Accordingly, the receiving device 202 has a receiving angle, i.e., infrared rays propagating within the receiving area 12 can be received by the receiving device 202. The infrared light emitted by the emitting device 201 is reflected by the object a, falls into the receiving area 12, and is received by the receiving device 202. The dam 204 is located between the emitting device 201 and the receiving device 202, and prevents the infrared light reflected by the non-object a from falling into the receiving area 12 and being received by the receiving device 202, thereby affecting the accuracy of the distance sensor 200.

Alternatively, the intersection X of the emission angle of the emission device 201 and the reception angle of the reception device 202 is located below the OLED display panel 100, so that a small amount of infrared light may enter the reception area 12 from below the OLED display panel 100 through the blocking wall 204 and the reflection of the OLED display panel 100. Therefore, when the object a is too close to the OLED display panel 100, the infrared light cannot be reflected from the OLED display panel 100 to enter the receiving area 12, so that insufficient infrared light enters the receiving area 12, and the distance sensor 200 cannot sense the existence of the object a, thereby avoiding error reporting.

It should be noted that, in the embodiment of the present disclosure, besides the separate distance sensor shown in fig. 1, that is, the distance sensor in which the transmitting device and the receiving device are separately arranged, an integrated distance sensor, that is, the transmitting device and the receiving device are integrally arranged, may also be adopted.

In the related art, the distance sensor may have a single emitting device, for example, one LED or one VCSEL, or may have a plurality of emitting devices, for example, a plurality of LEDs or a plurality of VCSELs. The use of a single transmitting device can effectively save the cost and the internal space of the terminal equipment, so that a large number of distance sensors of the mobile terminals are provided with the single transmitting device.

When the wavelength of the infrared light emitted by the single emitting device 201 is the above wavelength, the infrared light passing through the transparent display area 110a may affect the organic light emitting material in the pixels irradiated in the transparent display area 110a, and excite the pixels to emit light, so as to generate bright spots on the OLED display panel, and affect the display effect of the OLED display panel.

Therefore, the embodiment of the present disclosure employs the control circuit to control the display parameters of the OLED display panel when the distance sensor 200 emits infrared light, so that the luminance difference between the irradiation region 111 of the OLED display panel irradiated with the infrared light and the non-irradiation region 112 located around the irradiation region is less than or equal to a predetermined value. The predetermined value is smaller than a luminance difference between the irradiation region 111 and the non-irradiation region 112 irradiated with the infrared light when the irradiation region 111 and the non-irradiation region 112 are driven with the same data voltage.

Alternatively, the irradiation region 111 may be within the transparent display region 110a, or may partially overlap with the transparent display region 110a, as long as sufficient infrared light can transmit through the transparent display region 110 a.

When the distance sensor 200 emits infrared light, since the pixels in the irradiation region 111 are excited, bright spots are generated, that is, when the irradiation region 111 and the non-irradiation region 112 are driven with the same data voltage, the luminance of the infrared light irradiated region 111 is larger than that of the non-irradiation region 112. In the embodiment of the disclosure, the display parameters of the OLED display panel 100 are controlled by the control circuit, so that the luminance difference between the irradiation area 111 of the OLED display panel 100 irradiated by the infrared light and the non-irradiation area 112 located around the irradiation area is less than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference which is a luminance difference between the irradiation region and the non-irradiation region irradiated with the infrared light when the irradiation region and the non-irradiation region are driven with the same data voltage, and the data voltage of the non-irradiation region corresponding to the first luminance difference is the same as the data voltage of the non-irradiation region corresponding to the second luminance difference, that is, the luminance value of the irradiation region 111 is decreased, thereby decreasing the luminance difference between the non-irradiation region 112 and the irradiation region 111, reducing the display difference between the irradiation region 111 irradiated with the infrared light emitted from the distance sensor 200 and the non-irradiation region 112, and improving the display effect.

In the embodiments of the present disclosure, the terminal device may be a terminal device having a distance sensor and an OLED display panel, such as a smart phone, a tablet computer, an electronic book reader, a player, and the like.

Alternatively, the non-irradiation region 112 located around the irradiation region may be all or part of the region except the irradiation region 111 in the entire display region of the OLED display panel. For example, the irradiation region 111 may be a region other than the irradiation region in a preset small region.

When the irradiation region 111 and the non-irradiation region 112 are driven by the same data voltage, and the luminance difference between the irradiation region 111 and the non-irradiation region 112 irradiated by the infrared light is B, the predetermined value may be smaller than 1/2 of B or 1/3 of B, so as to reduce the luminance difference between the irradiation region 111 and the non-irradiation region 112 as much as possible, so that the display color of the irradiation region 111 irradiated by the infrared light and the display color of the non-irradiation region 112 are not greatly different in the human eye, and the bright spots formed by the irradiation region 111 irradiated by the infrared light are not easily perceived by the human.

Illustratively, the predetermined value may be equal to 0, that is, the luminance difference between the irradiation region 111 and the non-irradiation region 112 irradiated with the infrared light is equal to 0, so as to eliminate the luminance difference between the irradiation region 111 and the non-irradiation region 112, so that the display color of the irradiation region 111 irradiated with the infrared light is consistent with the display color of the non-irradiation region 112, and further, the bright spot formed by the irradiation region 111 irradiated with the infrared light disappears and is completely merged into the non-irradiation region 112.

For example, the luminance of the illuminated area and the luminance of the non-illuminated area may be the total luminance value of all pixels in the corresponding area (i.e., the sum of the luminance values of all pixels), or may be the average value of the luminance values of all pixels in the corresponding area.

Fig. 3 is a schematic top-view structure diagram of a terminal device according to an exemplary embodiment, which shows a partial structure of a front surface of the terminal device. In some embodiments, referring to fig. 3, the OLED display panel includes a fixed display area 110, the fixed display area 110 is used for displaying graphics with fixed positions and fixed colors, the fixed display area 110 at least partially overlaps with the transparent display area 110a, and the illuminated area 111 and the non-illuminated area 112 are both located within the fixed display area. Since the display position and the color of the graph displayed in the fixed display area 110 are fixed, when the brightness difference between the illumination area 111 and the non-illumination area 112 is adjusted, the adjusted display parameters can be fixed and continuously adjusted without adjusting the display parameters according to the change in real time.

FIG. 4 is a partially schematic illustration of a user interface in accordance with an exemplary embodiment. As shown in fig. 4, the fixed display area 110 may be for displaying at least a portion of a battery display graphic. Since the display battery display graphics are typically fixed in position and not user modifiable, the use by the user may not be affected by having the fixed display area 110 disposed therein. In practice, at least a part of the display battery display graph can be locked in the user display interface, and the user is not allowed to modify the display battery display graph, so that the display position and the color of the fixed display area are fixed.

In some embodiments, the fixed display area 110 is a low power display area of the battery display graphics, and the illumination area 111 may be located in the low power display area of the battery display graphics, and in general, the display color change at the position is relatively small, for example, the probability that the display color of the low power display area does not change is greater than that of the high power display area, so that the display color of the illumination area 111 can be further ensured to be stable.

FIG. 5 is a partially schematic illustration of another user interface according to an exemplary embodiment. As shown in fig. 5, the fixed display area 110 may be at least a portion of a signal strength graph. Since the signal strength graph is typically fixed in position and not modified by the user, the fixed display area 110 is provided here and may not affect the user's use. In practice, at least a part of the signal strength graph can be locked in the user display interface, and the user is not allowed to modify the signal strength graph, so that the display position and the color of the fixed display area are fixed and unchanged.

In some embodiments, the fixed display area 110 is a display area of a smallest one of the plurality of signal bars of the signal intensity pattern, and the illumination area 111 may be located on the smallest one of the plurality of signal bars of the signal intensity pattern. The probability that the display color of the smallest signal bar among the plurality of signal bars of the signal intensity pattern does not change is greater than that of the other signal bars of the signal intensity pattern, which can further ensure the stability of the display color of the illumination region 111.

It should be noted that, besides the battery display pattern and the signal intensity pattern, other patterns with fixed positions and colors may be used, and the disclosure is not limited thereto.

In some embodiments, the difference between the brightness of the illumination-enabled region 111 and the brightness of the non-illumination region 112 may be obtained by:

when the irradiation region 111 and the non-irradiation region 112 are driven to emit light by the same data voltage and infrared light is irradiated on the irradiation region, a gray scale image of the fixed display region 100 is acquired, a gray scale value of the irradiation region 111 and a gray scale value of the non-irradiation region 112 in the fixed display region 100 are acquired based on the gray scale image of the fixed display region 100, and a difference between the luminance of the irradiation region 111 and the luminance of the non-irradiation region 112 is determined based on the gray scale value of the irradiation region 111 and the gray scale value of the non-irradiation region 112 in the fixed display region 100.

The gray-scale value of the irradiation region 111 and the gray-scale value of the non-irradiation region 112 may be used to reflect the luminance of the irradiation region 111 and the luminance of the non-irradiation region 112. The difference between the gray-scale value of the irradiation region 111 and the gray-scale value of the non-irradiation region 112 may also be used to reflect that the difference between the luminance of the irradiation region 111 and the luminance of the non-irradiation region 112 is a luminance difference.

When the distance sensor 200 emits infrared light, the control circuit may control the display parameters of the OLED display panel in such a manner that a luminance difference between an irradiated region 111 of the OLED display panel irradiated with the infrared light and a non-irradiated region 112 located around the irradiated region is less than or equal to a predetermined value.

In some embodiments, the display parameters include data voltages, and the control circuit is configured to control the data voltages corresponding to the pixels of the fixed display area to be 0 when the distance sensor emits infrared light, so that the pattern in the fixed display area is black.

In some embodiments, the display parameters include a first data voltage and a second data voltage, and the control circuit is configured to provide the first data voltage to the pixels of the irradiation region 111 and the second data voltage to the pixels of the non-irradiation region 112 when the distance sensor 200 emits the infrared light, the first data voltage being less than the second data voltage. Since the data voltage and the luminance value of the pixel are in a positive correlation, the luminance value of the pixel in the irradiation region 111 driven by the first data voltage is smaller than the luminance value of the pixel in the non-irradiation region 112 driven by the second data voltage, so that the luminance influence caused by infrared light irradiation can be compensated to a certain extent, and even the luminance influence caused by infrared light irradiation can be eliminated.

In some embodiments, the display parameters include a refresh frequency, and the control circuit is configured to control the refresh frequency of the illuminated area 111 such that when the distance sensor emits infrared light, at least some of the pixels of the illuminated area 111 do not emit light because of the refresh reset.

The above manner for controlling the display parameters of the OLED display panel by the control circuit can be referred to in the relevant contents of the method embodiments shown in fig. 6 to 9.

The application also provides a display control method which is suitable for the terminal equipment with the distance sensor and the OLED display panel. The method may be performed by the OLED display panel or the terminal device having the OLED display panel, for example, by a driving circuit in the OLED display panel, which is usually an integrated circuit, or a controller in the terminal device, which is usually an integrated circuit or a processing chip.

Fig. 6 is a flowchart illustrating a display control method according to an exemplary embodiment, as shown in fig. 6, the method including the steps of:

in step S11, while the distance sensor emits infrared light, controlling display parameters of the OLED display panel such that a luminance difference between an irradiated region of the OLED display panel irradiated with the infrared light and a non-irradiated region located around the irradiated region is less than or equal to a predetermined value; the predetermined value is less than a difference in luminance between the irradiated area and the non-irradiated area irradiated with the infrared light when the irradiated area and the non-irradiated area are driven with the same data voltage, the irradiated area and the transparent display area at least partially overlapping.

When the distance sensor emits infrared light, since pixels in the irradiated region are excited, bright spots are generated, that is, when the irradiated region and the non-irradiated region are driven with the same data voltage, the luminance of the irradiated region by infrared light is larger than that of the non-irradiated region. In the embodiment of the disclosure, the display parameters of the OLED display panel are controlled by the control circuit, so that the luminance difference between the irradiation area irradiated by the infrared light and the non-irradiation area located around the irradiation area of the OLED display panel is smaller than or equal to the luminance difference between the irradiation area irradiated by the infrared light and the non-irradiation area when the irradiation area and the non-irradiation area are driven by the same data voltage, that is, the luminance value of the irradiation area is reduced, thereby reducing the luminance difference between the non-irradiation area and the irradiation area, reducing the display difference between the irradiation area irradiated by the infrared light emitted by the distance sensor and the non-irradiation area, and improving the display effect.

Alternatively, when the irradiation region 111 and the non-irradiation region 112 are driven with the same data voltage, and the luminance difference between the irradiation region 111 and the non-irradiation region 112 irradiated with the infrared light is B, the predetermined value may be less than or equal to 1/2 of B or 1/3 of B, thereby reducing the luminance difference between the irradiation region 111 and the non-irradiation region 112 as much as possible, so that the display color of the irradiation region 111 irradiated with the infrared light and the display color of the non-irradiation region 112 are not greatly different in the human eye, and the bright spots formed by the irradiation region 111 irradiated with the infrared light are not easily perceived by the human eye.

Illustratively, the predetermined value may be equal to 0, that is, the luminance difference between the irradiation region 111 and the non-irradiation region 112 irradiated with the infrared light is equal to 0, so as to eliminate the luminance difference between the irradiation region 111 and the non-irradiation region 112, so that the display color of the irradiation region 111 irradiated with the infrared light and the display color of the non-irradiation region 112 are consistent, thereby causing the bright spots formed by the irradiation region 111 irradiated with the infrared light to disappear and completely merge into the non-irradiation region 112.

Fig. 7 is a flowchart illustrating another display control method according to an exemplary embodiment, in which infrared light emitted from a distance sensor is shielded by controlling at least a portion of a fixed display area to display a black pattern when the distance sensor emits light. As shown in fig. 7, the method comprises the steps of:

in step S21, when the distance sensor emits infrared light, the data voltage corresponding to the pixels of the fixed display area is controlled to 0 so that the pattern in the fixed display area is black.

In practical applications, the OLED display panel includes a plurality of pixels distributed in an array, and each pixel may include a plurality of sub-pixels, for example, composed of R, G, B three sub-pixels. And respectively driving each sub-pixel to emit light by using the data voltage, and mixing and displaying the required colors. When the sub-pixels are not driven with the data voltages, the pixels do not emit light, and the regions corresponding to the pixels are displayed in black.

In some embodiments, when the distance sensor emits infrared light, display parameters, such as data voltage, of the illuminated area and the non-illuminated area may be set to zero. At this time, the pixel is off, and the pixels of the irradiated region and the non-irradiated region are black. Since the pixels are off, the pixels in the irradiated region do not affect the color of the pixels even if they absorb the energy of infrared rays, and therefore the display colors of the irradiated region and the non-irradiated region are uniform and are both black.

In some embodiments, the distance sensor is mainly used to avoid misoperation when a user makes or receives a call, so the distance sensor is automatically turned on when the calling module is called. Therefore, whether the distance sensor is on, that is, whether infrared light is emitted, can be judged according to whether the calling module is called. When the calling module of the mobile terminal is called, the distance sensor is turned on to emit infrared light. Display parameters, such as data voltages, of the illuminated and non-illuminated areas may be set to zero at this time.

In other embodiments, the control circuit is further configured to control the pixels of the illuminated area 111 and the non-illuminated area 112 of the fixed display area 110 not to emit light when the distance sensor does not emit infrared light, so that the patterns in the illuminated area 111 and the non-illuminated area 112 are both black. That is, in these embodiments, the display parameters, such as the data voltage, of the illuminated area and the non-illuminated area are set to zero regardless of whether the distance sensor emits infrared light. Since the pixels are off, the pixels in the irradiated region do not affect the color of the pixels even if they absorb the energy of infrared rays, and therefore the display colors of the irradiated region and the non-irradiated region are uniform and are both black.

Fig. 8 is a flowchart illustrating another display control method according to an exemplary embodiment, in which the luminance of an irradiated region is reduced by supplying a smaller data voltage to pixels of the irradiated region than to pixels of a non-irradiated region when a distance sensor emits light. As shown in fig. 8, the method comprises the steps of:

in step S31, when the distance sensor emits infrared light and the irradiated region and the non-irradiated region are driven with the same data voltage, a grayscale image of the fixed display region is acquired.

When the irradiation area and the non-irradiation area are driven by the same data voltage, the luminance displayed by the irradiation area and the non-irradiation area of the OLED display panel should be the same. However, due to the infrared light emitted by the distance sensor, the organic light-emitting material in the irradiated area is affected when the irradiated area is irradiated, and the pixels are excited to emit light, so that the brightness difference occurs between the irradiated area and the non-irradiated area.

Since the distance sensor is mainly used to avoid the misoperation of the user when making and receiving calls, the distance sensor is automatically turned on when the calling module is called. Therefore, whether the distance sensor is on, that is, whether infrared light is emitted, can be judged according to whether the calling module is called. When the calling module of the mobile terminal is called, the distance sensor is turned on to emit infrared light.

When a calling module of the mobile terminal is called and the irradiation area and the non-irradiation area are driven by the same data voltage, a color image of the fixed display area is obtained.

Illustratively, the image displayed by the OLED display panel may be acquired by an image acquisition Device, such as a CCD (Charge Coupled Device) or the like. Due to the fixed display area position determination, the image of the fixed display area can be intercepted according to the coordinate of the fixed display area on the display panel. As shown in fig. 4, the fixed display area 110 is a display battery graphic area, and the coordinates of four vertexes are a (x1, y1), B (x2, y2), C (x3, y3), and D (x4, y 4). The image of the fixed display area can be truncated by the four vertex coordinate coordinates. As shown in fig. 5, the fixed display area 110 is a display area of the smallest one of the signal bars in the signal intensity pattern, and the four vertex coordinates thereof are a (x1, y1), B (x2, y2), C (x3, y3), and D (x4, y4), respectively. The image of the fixed display area can be truncated by the four vertex coordinate coordinates.

Then, the cut color image of the fixed display area is converted into a grayscale image. In the converted gray image, the gray value range of the pixel point is usually 0-255.

In step S32, the gradation value of the irradiation region and the gradation value of the non-irradiation region are acquired from the gradation image of the fixed display region.

The position of the emitting device of the distance sensor, the emitting angle and the distance from the OLED display panel are fixed for one terminal device. Therefore, the boundary of the irradiation region is determined at the position of the fixed display region. The extent of the illuminated area may be determined from the coordinates of the border of the illuminated area relative to the fixed display area. And acquiring the gray value of each pixel point in the irradiation area range, thereby determining the gray value of the irradiation area.

The gray value of the non-irradiation area in the fixed display area is acquired, the non-irradiation area is the area of the fixed display area except the irradiation area, and the specific position can be determined according to the boundary of the fixed display area and the boundary of the irradiation area.

Alternatively, the gray value of the non-irradiation region can be obtained through an a-a template, and the intermediate value can be obtained by a traversal method to serve as the gray value of the non-irradiation region. Because the range of the non-irradiation area is relatively dispersed, the accuracy of the gray value of the non-irradiation area can be improved by taking the intermediate value through a traversal method. Wherein a is a positive integer.

In step S33, a predetermined value is determined from the gradation value of the irradiated region and the gradation value of the non-irradiated region.

The gray scale values of the illuminated area and the gray scale values of the non-illuminated area may be used to reflect the brightness of the illuminated area and the brightness of the non-illuminated area. Accordingly, the difference between the gray-level value of the irradiation region and the gray-level value of the non-irradiation region can also be used to reflect the difference between the brightness of the irradiation region and the brightness of the non-irradiation region, i.e. the brightness difference. Therefore, the predetermined value can be determined according to a predetermined proportional relationship between the luminance difference and the predetermined value.

Alternatively, when the luminance difference is B, the predetermined value may be less than or equal to 1/2 of B or 1/3 of B, so as to minimize the luminance difference between the irradiated region and the non-irradiated region, so that the display color of the irradiated region irradiated with infrared light and the display color of the non-irradiated region do not appear to be different in human eyes, thereby making bright spots formed by the irradiated region irradiated with infrared light less noticeable to human beings.

For example, the predetermined value may be equal to 0, that is, the luminance difference between the irradiation region irradiated with the infrared light and the non-irradiation region is equal to 0, so as to eliminate the luminance difference between the irradiation region and the non-irradiation region, so that the display color of the irradiation region irradiated with the infrared light and the display color of the non-irradiation region are consistent, and thus the bright spot formed by the irradiation region irradiated with the infrared light disappears and is completely merged into the non-irradiation region.

It should be noted that steps S31-S33 are optional steps, and in a specific implementation, the operation may be performed before factory shipment, and then the determined predetermined value is stored in the terminal device. Since the emission angle of the distance sensor and the position of the distance sensor in the terminal device are fixed, the energy value received by the pixels of the irradiation area is constant, and the luminance difference of the generated bright spots is also fixed. This stored predetermined value may be directly retrieved for the next use. Therefore, the response speed can be improved, and the time delay caused by the calculation of the terminal equipment is avoided.

In step S34, the first data voltage is supplied to the pixels of the irradiation region while the distance sensor emits infrared light.

Since the brightness value corresponding to the pixel in the OLED display panel is in a positive correlation with the data voltage of the pixel, the adjustment value of the data voltage can be determined according to the predetermined value. On the basis of the same data voltage adopted by the irradiation area and the non-irradiation area, the adjustment value of the data voltage is subtracted from the same data voltage to obtain a first data voltage. The adjusted first data voltage is supplied to the pixels of the irradiation area so that the luminance value of the irradiation area is reduced.

In step S35, a second data voltage is supplied to the pixels of the non-irradiated region while the distance sensor emits infrared light, the first data voltage being smaller than the second data voltage.

Alternatively, the second data voltage may be the same as the same data voltage used for the irradiated area and the non-irradiated area, i.e. the pixel voltage of the non-irradiated area is not adjusted. As the first data voltage is adjusted, the luminance value of the irradiated area is reduced. Therefore, even if the pixel voltage of the non-irradiation region is not adjusted, that is, the luminance value of the non-irradiation region is not adjusted, the luminance difference between the irradiation region and the non-irradiation region can be reduced, so that the display difference between the irradiation region and the non-irradiation region can be reduced, and the display effect can be improved.

Fig. 9 is a flowchart illustrating another display control method according to an exemplary embodiment, in which a refresh frequency of an irradiation region is controlled such that at least a part of pixels of the irradiation region display black due to refresh reset when infrared light is emitted from a distance sensor to shield infrared light emitted from the distance sensor.

As shown in fig. 9, the method includes the steps of:

step S41: at least one of a refresh frequency of the irradiation region and a light emission frequency of the distance sensor is controlled so that when the distance sensor emits infrared light, at least a part of the pixels of the irradiation region do not emit light because of refresh reset.

Generally, when the distance sensor emits infrared light, the distance sensor usually undergoes PWM (Pulse-Width modulation), that is, the frequency of emitting infrared light is controlled by a Pulse signal with a certain frequency, so as to control the energy consumption of the emitting device and prolong the service life of the emitting device.

During the refreshing process of the OLED display panel, the data on the pixels can be cleared, and the pixels in the row are closed. Since the row of pixels is turned off, the color of the row of pixels in the irradiation area is not affected even if the row of pixels absorbs the energy of the infrared ray. Since the bright spot area generally spans 3-4 rows of pixels, the brightness of the pixels on the row is unchanged, and 1/3-1/4 brightness can be reduced, so that the brightness difference between the irradiation area and the non-irradiation area is obviously reduced, the display difference between the irradiation area and the non-irradiation area is reduced, and the display effect is improved.

Since the refreshing of the OLED display panel is performed line by line, the emission time point of the infrared light emitted by the distance sensor needs to be synchronized with the refreshing time point of the pixels.

In some embodiments, a first row of pixels of the OLED display panel passes through an illuminated area on the OLED display panel of infrared light emitted by the emitting device, a refresh frequency of the first row of pixels is an integer multiple, such as 1, 2, etc., of a light emitting frequency of the distance sensor, and the first row of pixels is refreshing when the distance sensor emits light. Since the refresh time point of the first row of pixels of the OLED display panel is more easily determined, the emission time point of the infrared light emitted from the emission device is also more easily determined.

In some embodiments, the irradiation area of the OLED display panel by the infrared light emitted from the emitting device may be located at other positions of the OLED display panel. At this time, the refresh time point of the pixel row may be determined according to the refresh time point of the first row of pixels of the OLED display panel and the delay time between the pixel row and the first row of pixels.

In the method shown in fig. 9, the irradiation region may be located in the fixed display region or may be located in any other region. When the irradiated area is located in the fixed display area, the irradiated area and the non-irradiated area are driven with the same data voltage.

The application also provides a display control device which is suitable for the terminal equipment with the distance sensor and the OLED display panel. Fig. 10 is a block diagram illustrating a display control apparatus according to an exemplary embodiment. Referring to fig. 10, the display control apparatus includes: a control module 501 for controlling at least one of a display parameter of the OLED display panel and a light emitting frequency of the distance sensor such that a first luminance difference between an irradiated region of the OLED display panel irradiated with infrared light and a non-irradiated region located around the irradiated region is less than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference which is a luminance difference between the irradiated area and the non-irradiated area irradiated with the infrared light when the irradiated area and the non-irradiated area are driven with the same data voltage, the data voltage of the non-irradiated area corresponding to the first luminance difference is the same as the data voltage of the non-irradiated area corresponding to the second luminance difference, and the irradiated area and the transparent display area are at least partially overlapped.

In some embodiments, the display parameter includes a data voltage, and the control module is configured to control the data voltage corresponding to the pixel of the fixed display area to be 0 when the distance sensor emits infrared light, so that the graphic in the fixed display area is black.

In some embodiments, the display parameter includes a first data voltage and a second data voltage, and the control module includes:

the first power supply module is used for supplying a first data voltage to pixels of an irradiation area when the distance sensor emits infrared light;

and the second power supply module is used for supplying a second data voltage to the pixels of the non-irradiation area when the distance sensor emits infrared light, the first data voltage is smaller than the second data voltage, and the difference value between the gray value corresponding to the pixels of the irradiation area driven by the first data voltage and the gray value corresponding to the pixels of the non-irradiation area driven by the second data voltage is smaller than or equal to a preset value.

Optionally, the control module further comprises:

the first acquisition submodule is used for acquiring a gray image of a fixed display area when the distance sensor emits infrared light and an irradiation area and a non-irradiation area are driven by the same data voltage;

the second acquisition submodule is used for acquiring the gray value of an irradiation area and the gray value of a non-irradiation area in the fixed display area according to the gray image of the fixed display area;

In some embodiments, the display parameters include a refresh frequency, and the control module is configured to control at least one of the refresh frequency of the illuminated area and a light emission frequency of the distance sensor such that when the distance sensor emits infrared light, at least some of the pixels of the illuminated area do not emit light because of the refresh reset.

The disclosed embodiments control at least one of a display parameter of the OLED display panel and a light emitting frequency of the sensor through the control circuit, so that a first luminance difference between an irradiation region of the OLED display panel irradiated with infrared light and a non-irradiation region located around the irradiation region is less than or equal to a predetermined value, the predetermined value being less than a second luminance difference, the second luminance difference being such that when the irradiation region and the non-irradiation region are driven with the same data voltage, the brightness difference between the irradiation region irradiated by infrared light and the non-irradiation region, the data voltage of the non-irradiation region corresponding to the first brightness difference is the same as the data voltage of the non-irradiation region corresponding to the second brightness difference, that is, the luminance value of the irradiation region is decreased to decrease the difference between the luminance of the non-irradiation region and the luminance of the irradiation region, thereby reducing the difference between the display of the irradiation region irradiated with the infrared light from the distance sensor and the display of the non-irradiation region, and improving the display effect.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 11 is a block diagram illustrating a display control apparatus 600 according to an exemplary embodiment, where the apparatus 600 may be a mobile terminal. Referring to fig. 9, the display control apparatus 600 may include one or more of the following components: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an interface to input/output (I/O) 612, a sensor component 614, and a communication component 616.

The processing component 602 generally controls overall operations of the display control apparatus 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.

The memory 604 is configured to store various types of data to support operations at the display control apparatus 600. Examples of such data include instructions for any software program or method operating on the display control apparatus 600, contact data, phonebook data, messages, pictures, videos, and the like. The memory 604 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power component 606 provides power to the various components of the display control apparatus 600. The power components 606 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the display control apparatus 600.

The multimedia component 608 includes a screen that provides an output interface between the display control apparatus 600 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

The audio component 610 is configured to output and/or input audio signals. In some embodiments, audio component 610 includes a speaker for outputting audio signals.

The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 614 includes one or more sensors for providing status assessment of various aspects of the display control apparatus 600. For example, when the smart device is a smart air conditioner, the sensor component 614 may include a humidity sensor, a temperature sensor, and the like.

The communication component 616 is configured to facilitate wireless communication between the display control apparatus 600 and other devices. In the disclosed embodiment, the communication component 616 may access a wireless network based on a communication standard, such as 2G, 3G, 4G, or 5G, or a combination thereof, so as to implement the physical downlink control signaling detection. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. Optionally, the communication component 616 further includes an NFC module.

In an exemplary embodiment, the display control apparatus 600 may be implemented by one or more software Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components for performing the above-described display control method.

In an exemplary embodiment, a non-transitory computer readable storage medium including instructions, such as the memory 604 including instructions, that may be executed by the processor 620 of the display control apparatus 600 to perform the display control method described above is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A terminal device, characterized in that the terminal device comprises:

an organic light emitting diode, OLED, display panel (100), the OLED display panel (100) comprising a transparent display area (110 a);

a distance sensor (200), the distance sensor (200) being located at a rear surface of the OLED display panel (100), the distance sensor (200) being configured to emit infrared light, the infrared light emitted by the distance sensor (200) being capable of passing through the transparent display area (110 a);

a control circuit for controlling at least one of a display parameter of the OLED display panel and a light emission frequency of the distance sensor (200) when the distance sensor (200) emits infrared light such that a first luminance difference of an irradiation region (111) of the OLED display panel irradiated with the infrared light and a non-irradiation region (112) located around the irradiation region is less than or equal to a predetermined value, the predetermined value being less than a second luminance difference, which is a luminance difference of the irradiation region (111) irradiated with the infrared light and the non-irradiation region (112) when the irradiation region (111) and the non-irradiation region (112) are driven with the same data voltage, a data voltage of the non-irradiation region (112) corresponding to the first luminance difference being the same as a data voltage of the non-irradiation region (112) corresponding to the second luminance difference, the illumination area (111) and the transparent display area (110a) at least partially overlap;

the OLED display panel comprises a fixed display area (110), the fixed display area (110) is used for displaying graphics with fixed positions and fixed colors, and the irradiation area (111) and the non-irradiation area (112) are both located in the fixed display area; the fixed display area is at least a portion of a battery display graphic or a signal strength graphic.

2. The terminal device of claim 1, wherein the fixed display area (110) is a low battery display area of the battery display graphic or the fixed display area (110) is a display area of a smallest one of a plurality of signal bars of the signal strength graphic.

3. A terminal device according to claim 2, wherein the predetermined value is equal to 0.

4. A terminal device according to any of claims 1 to 3, wherein the display parameters comprise data voltages, and the control circuit is configured to control the data voltages corresponding to the pixels of the fixed display area (110) to be 0 when the distance sensor (200) emits infrared light, such that the graphics in the fixed display area (110) are black.

5. A terminal device according to any one of claims 1 to 3, wherein the display parameters comprise a first data voltage and a second data voltage, and wherein the control circuit is adapted to supply the first data voltage to the pixels of the illuminated area (111) and the second data voltage to the pixels of the non-illuminated area (112) when the distance sensor (200) emits infrared light, the first data voltage being less than the second data voltage.

6. A terminal device according to any of claims 1 to 3, wherein said display parameters comprise a refresh frequency, and said control circuit is adapted to control at least one of said refresh frequency of said illuminated area (111) and a light emission frequency of said distance sensor (200) such that when said distance sensor emits infrared light, at least some pixels of said illuminated area (111) do not emit light due to a refresh reset.

7. The display control method is characterized by being applicable to terminal equipment, wherein the terminal equipment comprises an Organic Light Emitting Diode (OLED) display panel and a distance sensor, the OLED display panel comprises a transparent display area, the distance sensor is positioned on the back surface of the OLED display panel, the distance sensor is used for emitting infrared light, and the infrared light emitted by the distance sensor can penetrate through the transparent display area; the method comprises the following steps:

controlling at least one of a display parameter of the OLED display panel and a light emitting frequency of the distance sensor when the distance sensor emits infrared light such that a first luminance difference of an irradiated area of the OLED display panel irradiated with the infrared light and a non-irradiated area located around the irradiated area is less than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference, the second luminance difference being a luminance difference between an irradiated region irradiated with infrared light and the non-irradiated region when the irradiated region and the non-irradiated region are driven with the same data voltage, a data voltage of the non-irradiated region corresponding to the first luminance difference being the same as a data voltage of the non-irradiated region corresponding to the second luminance difference, the irradiated region and the transparent display region being at least partially overlapped; the display area of the OLED display panel comprises a fixed display area, the fixed display area is used for displaying a graph with fixed position and color, and the irradiation area and the non-irradiation area are both located in the fixed display area; the fixed display area is at least a portion of a battery display graphic or a signal strength graphic.

8. The method of claim 7, wherein the fixed display area is a low battery display area of the battery display graphic or a display area of a smallest one of the plurality of signal bars of the signal strength graphic.

9. The method of claim 7, wherein the predetermined value is equal to 0.

10. The method according to any one of claims 7 to 9, wherein the display parameter comprises a data voltage, and the controlling the display parameter of the OLED display panel comprises:

when the distance sensor emits infrared light, controlling the data voltage corresponding to the pixels of the fixed display area to be 0, so that the graph in the fixed display area is black.

11. The method according to any one of claims 7 to 9, wherein the display parameters comprise a first data voltage and a second data voltage, and the controlling the display parameters of the OLED display panel comprises:

when the distance sensor emits infrared light, the first data voltage is supplied to the pixels of the illuminated area, and the second data voltage is supplied to the pixels of the non-illuminated area, the first data voltage being smaller than the second data voltage.

12. The method of claim 11, further comprising:

when the distance sensor emits infrared light and the irradiation area and the non-irradiation area are driven by the same data voltage, acquiring a gray level image of the fixed display area;

acquiring a gray value of the irradiation area and a gray value of the non-irradiation area according to the gray image of the fixed display area;

and determining the preset value according to the gray value of the irradiation area and the gray value of the non-irradiation area.

13. The method according to any one of claims 7 to 9, wherein the display parameters include a refresh frequency, and the controlling the display parameters of the OLED display panel includes:

controlling at least one of a refresh frequency of the irradiation region and a light emission frequency of the distance sensor such that when the distance sensor emits infrared light, at least some of the pixels of the irradiation region do not emit light because of refresh reset.

14. The display control device is suitable for a terminal device, the terminal device comprises an Organic Light Emitting Diode (OLED) display panel and a distance sensor, the OLED display panel comprises a transparent display area, the distance sensor is positioned on the back of the OLED display panel, the distance sensor is used for emitting infrared light, and the infrared light emitted by the distance sensor can penetrate through the transparent display area;

the display control apparatus includes:

a control module for controlling at least one of a display parameter of the OLED display panel and a light emitting frequency of the distance sensor when the distance sensor emits infrared light such that a first luminance difference of an irradiated area of the OLED display panel irradiated with the infrared light and a non-irradiated area located around the irradiated area is less than or equal to a predetermined value; the predetermined value is smaller than a second luminance difference, the second luminance difference being a luminance difference between an irradiated region irradiated with infrared light and the non-irradiated region when the irradiated region and the non-irradiated region are driven with the same data voltage, a data voltage of the non-irradiated region corresponding to the first luminance difference being the same as a data voltage of the non-irradiated region corresponding to the second luminance difference, the irradiated region and the transparent display region being at least partially overlapped;

the display area of the OLED display panel comprises a fixed display area, the fixed display area is used for displaying a graph with fixed position and color, and the irradiation area and the non-irradiation area are both located in the fixed display area; the fixed display area is at least a portion of a battery display graphic or a signal strength graphic.

15. The display control apparatus according to claim 14, wherein the fixed display area is a low power display area of the battery display pattern, or a display area of a smallest one of a plurality of signal bars of the signal intensity pattern.

16. The display control apparatus according to claim 15, wherein the predetermined value is equal to 0.

17. The apparatus according to any one of claims 14 to 16, wherein the display parameter comprises a data voltage, and the control module is configured to control the data voltage corresponding to the pixel of the fixed display area to be 0 when the distance sensor emits infrared light, so that the graphic in the fixed display area is black.

18. The display control device according to any one of claims 14 to 16, wherein the display parameter includes a first data voltage and a second data voltage, and the control module includes:

19. The display control device of claim 18, wherein the control module further comprises:

20. The display control apparatus according to any one of claims 16 to 18, wherein the display parameter comprises a refresh frequency, and the control module is configured to:

21. The display control device is suitable for a terminal device, the terminal device comprises an Organic Light Emitting Diode (OLED) display panel and a distance sensor, the OLED display panel comprises a transparent display area, the distance sensor is positioned on the back of the OLED display panel, the distance sensor is used for emitting infrared light, and the infrared light emitted by the distance sensor can penetrate through the transparent display area;

the display control apparatus includes:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to:

22. A computer-readable storage medium comprising at least one instruction which, when executed by a processor, performs the display control method of any one of claims 7-13.