CN201765803U - Backlight source intensity adjusting structure of electronic device - Google Patents
Backlight source intensity adjusting structure of electronic device Download PDFInfo
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- CN201765803U CN201765803U CN201020199010XU CN201020199010U CN201765803U CN 201765803 U CN201765803 U CN 201765803U CN 201020199010X U CN201020199010X U CN 201020199010XU CN 201020199010 U CN201020199010 U CN 201020199010U CN 201765803 U CN201765803 U CN 201765803U
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- 238000001514 detection method Methods 0.000 claims abstract description 65
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 10
- 238000004020 luminiscence type Methods 0.000 abstract 3
- 239000004973 liquid crystal related substance Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 230000004397 blinking Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
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Abstract
The utility model provides a backlight source intensity adjusting structure of an electronic device, which is installed inside a casing and electrically connected with a backlight module; a light-transmitting part is arranged on the casing; the adjusting structure comprises an optical detection circuit board; the optical detection circuit board is installed inside the casing, corresponds to the light-transmitting part and is electrically connected with the backlight module of the electronic device; an optical detection circuit is arranged on the optical detection circuit board and comprises a controlling unit, a lighting unit, a driving component and a storage unit; and a luminescence chip and an optical detection component are respectively arranged on the lighting unit. The controlling unit is used for outputting the signal, the driving component drives the luminescence chip to display the flicker phenomenon, the optical detection component is used for reading the external ambient light source when the luminescence chip is in the extinguished state, the detection signal is transmitted to the controlling unit for processing and then compared with the setup parameter value stored in the storage unit, and then the brightness of the backlight module is adjusted according to the setup parameter value.
Description
Technical Field
The present invention relates to a display screen, and more particularly to a display screen capable of adjusting the brightness of a backlight module according to the intensity of a light source in an external environment.
Background
Liquid crystal displays have been widely used in various electronic devices, such as liquid crystal displays, mobile phones, Personal Digital Assistants (PDAs), Global Positioning Systems (GPS), ipods, ipads, iphones, and digital cameras.
The current liquid crystal display has two types, namely a reflective type liquid crystal display and a transmissive type liquid crystal display, and because the power consumption of the reflective type liquid crystal display is far more than that of the transmissive type liquid crystal display, many electronic devices such as a PDA, a GPS, an ipod, an ipad, an iphone, a mobile phone, a liquid crystal display and a digital camera all use the transmissive type liquid crystal display to meet the requirements of electricity saving and economic benefit.
Generally, when using the transmissive liquid crystal display, the image of the transmissive liquid crystal display is washed away (wash out) due to outdoor strong light irradiation, which results in reduced contrast, and the user cannot clearly see the image displayed on the liquid crystal display, and must take the environment with weak light to clearly see the image displayed on the liquid crystal display, thereby causing troubles and inconvenience in use.
Moreover, when the transmissive liquid crystal display is used in an environment with weak light, and the brightness reflected by the backlight module of the transmissive liquid crystal display is too bright, the eyes feel uncomfortable, and if the transmissive liquid crystal display is used for a long time, the eyes are easily injured.
In order to solve the above problems, the industry must provide a through hole in the housing of the electronic device, mount an optical sensor on the through hole, and adjust the backlight brightness of the electronic device in such a way that the optical sensor detects the external ambient light source.
SUMMERY OF THE UTILITY MODEL
The main objective of the present invention is to provide a backlight intensity adjusting structure for an electronic device, which does not need to additionally provide a through hole on the housing of the electronic device for installing a light detecting component, and can also adjust the backlight intensity of the electronic device.
In order to achieve the above object, the utility model provides an electron device's strong and weak adjustment structure of light source in a poor light installs in inside and backlight unit electric connection of casing, has printing opacity portion on this casing, and this adjustment structure has:
the light detection circuit board is arranged in the shell, is configured corresponding to the light transmission part and is electrically connected with the backlight module, and a light detection circuit is arranged on the light detection circuit board; wherein,
the light detection circuit includes:
a control unit for controlling the core of the light detection circuit;
the driving assembly is electrically connected with the control unit and used for receiving the driving signal output by the control unit;
the light-emitting unit is provided with a light-emitting chip and a light detection assembly, the light-emitting chip and the light detection assembly are packaged by a packaging body, and the light-emitting chip is electrically connected with the driving assembly;
the storage unit is electrically connected with the control unit and used for storing the set parameter value for adjusting the brightness;
the control unit controls the light emitting chip to be in a flashing state, the light detection assembly reads an external environment light source entering from the light transmission part when the light emitting chip is in an off state, the read signal is transmitted to the control unit to be processed, and then the read signal is compared with the set parameter value of the storage unit, and the control unit adjusts the light source brightness of the backlight module according to the set parameter value.
In order to achieve the above object, the present invention further provides a backlight source strength adjusting structure of an electronic device, which is installed inside a housing and electrically connected to a backlight module, wherein the housing has a light-transmitting portion, and the adjusting structure has:
the light detection circuit board is arranged in the shell, is configured corresponding to the light transmission part and is electrically connected with the backlight module, and a light detection circuit is arranged on the light detection circuit board; wherein,
the light detection circuit includes:
a control unit for controlling the core of the light detection circuit;
the light-emitting unit is arranged in the light-transmitting part and is provided with a light-emitting chip and a light detection driving assembly, the light-emitting chip is electrically connected with the light detection driving assembly, and the light detection driving assembly is electrically connected with the control unit;
the storage unit is electrically connected with the control unit and used for storing the set parameter value for adjusting the brightness;
the control unit controls the light emitting chip to be in a flashing state through the light detection driving component, the light detection driving component reads an external environment light source when the light emitting chip is in an off state, the read signal is transmitted to the control unit to be processed, the signal is compared with a set parameter value of the storage unit, and the control unit adjusts the light source brightness of the backlight module according to the set parameter value.
Compared with the prior art, the utility model discloses after combining into single subassembly with the light detection subassembly that is used for detecting the light with the emitting diode's that will be used as the pilot lamp luminous chip, but when the application direct mount on the perforation of this electron device casing original installation pilot lamp, make this light detection subassembly detectable external environment light source. Thus, the utility model discloses need not to set up the perforation again on this electron device's the casing in addition and install the light detection subassembly that is used for detecting external environment light source alone to make electron device's display screen more be convenient for adjust backlight module's luminance according to external environment's light source intensity, realize moreover comparatively economic, convenient.
Drawings
Fig. 1 is a schematic block diagram of a circuit of an optical detection circuit according to the present invention;
fig. 2 is a schematic diagram of a first usage state of the optical detection circuit according to the present invention;
fig. 3 is a schematic diagram of the second usage state of the photodetection circuit of the present invention;
fig. 4 is a schematic diagram of a third usage state of the photodetection circuit according to the present invention;
fig. 5 is a schematic diagram of a fourth usage state of the photodetection circuit according to the present invention;
fig. 6 is a schematic view of another embodiment of the backlight intensity adjusting structure of the electronic device of the present invention.
Description of the reference numerals
Light emitting chip 11 light detecting component 12
Load 5 photo detection drive assembly 6
Light detecting circuit board 10a electronic device 20
Casings 201, 201a, 201b, 201c
Light-transmitting key 202b fluorescent screen 203
Detailed Description
The detailed description and technical contents related to the present invention are described as follows with reference to the accompanying drawings:
fig. 1 is a block diagram of a light detection circuit according to the present invention. The utility model discloses electron device's strong and weak adjustment structure of light source in a poor light installs in the inside and backlight unit electric connection of casing. As shown in fig. 1: the utility model discloses light detection circuit 10 in electron device's backlight source intensity adjustment structure, include: light emitting unit 1, control unit 2, drive module 3 and storage unit 4.
The light emitting unit 1 is composed of a light emitting chip 11 and a light detecting element 12 electrically connected to each other, and is packaged by a transparent package 13. The light emitting chip 11 is a light emitting diode chip, and since the output signal of the control unit 2 drives the light emitting chip 11 through the driving component 3, the light emitting chip 11 is caused to flash (on and off), and the light detecting component 12 is a light source for reading the external environment when the light emitting chip 11 is driven to be turned off.
The control unit 2 is a control core of the light detection circuit 10, and the control unit 2 is electrically connected to the light emitting unit 1 for calculating a signal output by the light detection element 12, comparing the signal with the parameter value stored in the storage unit 4, and outputting a control signal to control the load 5. In fig. 1, the control unit 2 is any one of a Microprocessor (MCU) and a Central Processing Unit (CPU).
The driving component 3 is electrically connected to the control unit 2 to receive an output signal (e.g., a driving signal) from the control unit 2 to drive the light emitting chip 11 to generate a flicker phenomenon.
The storage unit 4 is electrically connected to the control unit 2 for storing a set parameter value for adjusting the brightness of the backlight source of the electronic device. In fig. 1, the storage unit 4 is a memory.
Please refer to fig. 1 and fig. 2, which are schematic diagrams of a circuit block and a first usage state of the light detection circuit according to the present invention, respectively. As shown in fig. 1 and 2: when the light emitting unit 1 of the present invention is used as an indicator light, the light detecting circuit 10 is a single light detecting circuit board 10a or is directly disposed on the main circuit board of the electronic device 20, the light detecting circuit board 10a is installed at a predetermined position inside the housing 201 of the electronic device 20, when the housing 201 is not transparent, the housing 201 has a light transmitting portion 202, the light transmitting portion 202 is a light conductor, and the light detecting circuit board 10a is electrically connected to the backlight module 204 of the fluorescent screen 203 of the electronic device 20.
When the electronic device (e.g. a liquid crystal display) 20 is in use, the output signal of the control unit 2 drives the light emitting chip 11 of the light emitting unit 1 through the driving component 3, so that when the light emitting chip 11 is in a blinking state, the light detecting component 12 reads the external environment light source guided by the light transmitting portion 202 when the light emitting chip 11 is in an off state, and transmits the read signal to the control unit 2 for processing, after the processing by the control unit 2, the read signal is compared with the set parameter value stored in the storage unit 4, and the brightness of the backlight module 204 is adjusted according to the set parameter value, so that a user can clearly see the picture displayed by the fluorescent screen 203 of the electronic device 20 when the light source brightness of the external environment is too bright or too dark.
Please refer to fig. 1 and fig. 3, which are schematic diagrams of a circuit block and a second usage state of the light detection circuit according to the present invention. As shown in fig. 1 and 3: the present usage status is substantially the same as that of fig. 2, except that when the housing 201a of the electronic device 20 is transparent, the position of the housing 201a corresponding to the light-emitting unit 1 can be regarded as a light-transmitting portion 202a, the output signal of the control unit 2 drives the light-emitting chip 11 through the driving component 3, when the light-emitting chip 11 is in the off status, the light detection component 12 directly reads the external ambient light source passing through the light-transmitting portion 202a, and transmits the read signal to the control unit 2 of the light detection circuit board 10a for processing, and then the control unit 2 adjusts the brightness of the backlight module 204.
Please refer to fig. 1 and fig. 4, which are schematic diagrams of a circuit block and a third operation state of the light detection circuit according to the present invention. As shown in fig. 1 and 4: the light-transmissive key 202b on the housing 201b is a component for introducing light, which is one implementation of the light-transmissive portion 202. The output signal of the control unit 2 drives the light emitting chip 11 through the driving component 3, when the light emitting chip 11 is in an off state, the light detecting component 12 reads the external environment light source guided by the light-transmitting key 202b, and transmits the read signal to the control unit 2 of the light detecting circuit board 10a for processing, and then the control unit 2 adjusts the brightness of the backlight module 204, so that the user can clearly see the picture displayed by the fluorescent screen 203 of the electronic device 20 when the light source brightness of the external environment is too bright or too dark.
Please refer to fig. 1 and 5, which are schematic diagrams of a circuit block and a usage state of the light detection circuit according to the present invention, respectively. As shown in fig. 1 and 5: when the light-transmitting portion 202c of the case 201c is a through hole, the light-emitting unit 1 may be attached to the through hole. When the output signal of the control unit 2 drives the light emitting chip 11 through the driving component 3, so that the light emitting chip 11 is in an off state, the light detecting component 12 can directly read the external environment light source, and after the read signal is transmitted to the control unit 2 of the light detecting circuit board 10a for processing, the control unit 2 adjusts the brightness of the backlight module 204, so that the user can clearly see the picture displayed by the fluorescent screen 203 of the electronic device 20 when the light source brightness of the external environment is too bright or too dark.
Referring to fig. 6, another embodiment of the backlight intensity adjusting structure of the electronic device of the present invention is shown. As shown in fig. 6: the present embodiment differs from the embodiment shown in fig. 1 in that the light detection element 12 inside the light emitting unit 1 is combined with the driving element 3 to form a single light detection driving element 6. When the output signal of the control unit 2 drives the light emitting chip 11 through the driving component 3 to make the light emitting chip 11 in the off state, the light detecting component 12 reads the external environment light source, and transmits the signal to the control unit 2 for processing, and then compares the signal with the set parameter value stored in the storage unit 4, so that the control unit 2 can adjust the brightness of the backlight module 204, and a user can clearly see the picture displayed by the fluorescent screen 203 of the electronic device 20 when the external environment light source is too bright or too dark.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the claims of the present invention are covered by the scope of the present invention.
Claims (14)
1. A backlight source intensity adjusting structure of an electronic device is arranged in a shell and electrically connected with a backlight module, and the shell is provided with a light transmission part, and is characterized in that the adjusting structure is provided with:
the light detection circuit board is arranged in the shell, is configured corresponding to the light transmission part and is electrically connected with the backlight module, and a light detection circuit is arranged on the light detection circuit board; wherein,
the light detection circuit includes:
a control unit for controlling the core of the light detection circuit;
the driving assembly is electrically connected with the control unit and used for receiving the driving signal output by the control unit;
the light-emitting unit is provided with a light-emitting chip and a light detection assembly, and the light-emitting chip is electrically connected with the driving assembly;
the storage unit is electrically connected with the control unit and used for storing the set parameter value for adjusting the brightness;
the control unit controls the light emitting chip to be in a flashing state, the light detection assembly reads an external environment light source entering from the light transmission part when the light emitting chip is in an off state, the read signal is transmitted to the control unit to be processed, the read signal is compared with the set parameter value of the storage unit, and the control unit adjusts the light source brightness of the backlight module according to the set parameter value.
2. The backlight source intensity adjusting structure of an electronic device according to claim 1, wherein the housing is transparent or opaque.
3. The backlight source intensity adjusting structure of claim 2, wherein the light-transmitting portion of the housing is a light conductor or a light-transmitting button.
4. The backlight source intensity adjusting structure of claim 1, wherein the light emitting chip is a light emitting diode chip.
5. The backlight source intensity adjusting structure of an electronic device according to claim 4, wherein the light emitting chip and the light detecting element are packaged by a package.
6. The backlight source intensity adjusting structure of an electronic device according to claim 1, wherein the control unit is a microprocessor or a CPU.
7. The backlight source intensity adjusting structure of claim 1, wherein the storage unit is a memory.
8. A backlight source intensity adjusting structure of an electronic device is arranged in a shell and electrically connected with a backlight module, and the shell is provided with a light transmission part, and is characterized in that the adjusting structure is provided with:
the light detection circuit board is arranged in the shell, is configured corresponding to the light transmission part and is electrically connected with the backlight module, and a light detection circuit is arranged on the light detection circuit board; wherein,
the light detection circuit includes:
a control unit for controlling the core of the light detection circuit;
the light-emitting unit is arranged in the light-transmitting part and is provided with a light-emitting chip and a light detection driving assembly, the light-emitting chip is electrically connected with the light detection driving assembly, and the light detection driving assembly is electrically connected with the control unit;
the storage unit is electrically connected with the control unit and used for storing the set parameter value for adjusting the brightness;
the control unit controls the light-emitting chip to be in a flashing state through the light detection driving component, the light detection driving component reads an external environment light source when the light-emitting chip is in an off state, the read signal is transmitted to the control unit to be processed, the read signal is compared with a set parameter value of the storage unit, and the control unit adjusts the light source brightness of the backlight module according to the set parameter value.
9. The backlight source intensity adjustment structure for an electronic device according to claim 8, wherein the light-transmitting portion is a through hole.
10. The backlight source intensity adjusting structure of claim 8, wherein the light emitting chip is a light emitting diode chip.
11. The backlight source intensity adjusting structure of an electronic device according to claim 10, wherein the light emitting chip and the light detection driving element are packaged by a package.
12. The backlight source intensity adjusting structure of claim 11, wherein the light detection driving component comprises a light detection component and a driving component, the light detection component is electrically connected to the control unit, and the driving component is electrically connected to the light emitting chip and the control unit.
13. The backlight source intensity adjusting structure of an electronic device according to claim 8, wherein the control unit is a microprocessor or a CPU.
14. The backlight source intensity adjusting structure of claim 8, wherein the storage unit is a memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020199010XU CN201765803U (en) | 2010-05-20 | 2010-05-20 | Backlight source intensity adjusting structure of electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020199010XU CN201765803U (en) | 2010-05-20 | 2010-05-20 | Backlight source intensity adjusting structure of electronic device |
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| Publication Number | Publication Date |
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| CN201765803U true CN201765803U (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020199010XU Expired - Fee Related CN201765803U (en) | 2010-05-20 | 2010-05-20 | Backlight source intensity adjusting structure of electronic device |
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| CN (1) | CN201765803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065200A (en) * | 2012-12-28 | 2017-08-18 | 联想(北京)有限公司 | Electronic equipment and display methods |
| WO2018107682A1 (en) * | 2016-11-17 | 2018-06-21 | 深圳市光峰光电技术有限公司 | Light source brightness control system, light source system and projection equipment |
-
2010
- 2010-05-20 CN CN201020199010XU patent/CN201765803U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065200A (en) * | 2012-12-28 | 2017-08-18 | 联想(北京)有限公司 | Electronic equipment and display methods |
| WO2018107682A1 (en) * | 2016-11-17 | 2018-06-21 | 深圳市光峰光电技术有限公司 | Light source brightness control system, light source system and projection equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20130520 |