TWI768890B - Curved full-array led light panel, curved backlight module and curved liquid crystal display - Google Patents

Abstract

A curved full-array LED light panel, a curved backlight module including the light panel, and a curved Liquid Crystal Display including the backlight module are disclosed. The curved light panel includes a flexible reflective sheet and a plurality of light bars on which a plurality of LEDs are disposed. The plurality of light bars are attached to the rear surface of the flexible reflective sheet alone a direction parallel to the height direction of the light panel, and the plurality of LEDs disposed on the light bars are exposed towards a LCD panel from a plurality of openings of the flexible reflective sheet. Along a direction parallel to the width direction of the light panel, the flexible reflective sheet is deformed to form a reflective curved surface. Each of the light bars comprises a bar-shaped PCB. The control circuit of the bar-shaped PCB further comprises a plurality of dimming zone circuit. Full-array local dimming of the curved light panel can be achieved by controlling the electrical current of the dimming zone circuit.

Description

Full array light emitting diode curved light panel, curved backlight module and curved liquid crystal display

The invention relates to an LED Light Panel, a LED Backlight Module and a Liquid Crystal Display (LCD). More specifically, the embodiments of the present invention relate to a Curved Full-Array LED Light Panel, a Curved Full-Array LED Light Panel, and a Curved Liquid Crystal Display.

Full-Array Local Dimming is a technology that adjusts the brightness of the backlight source of liquid crystal display by area. It divides the backlight source into different areas and adjusts the light and dark changes to different degrees, thereby greatly reducing the brightness of the liquid crystal display. power consumption, and improve the contrast ratio of the display screen (Contrast Ratio), increase the number of gray scales, and reduce afterimages. When the liquid crystal display is used to improve the image contrast of the liquid crystal display, it is easier to display vivid and rich colors to improve its image quality. Ideally, full-array area dimming is to control the luminous brightness of each light-emitting diode (LED) in the light-emitting diode backlight module separately and independently, but generally speaking, the LED backlight module is All the light emitting diodes in the group are divided into a plurality of dimming zones, and the uniform luminance of the light emitting diodes in each dimming zone is controlled separately and independently. The larger the number of dimming zones, the smaller the size of the dimming zones, and the better the image contrast quality. With proper dimming zone design, the image contrast ratio can reach 1,000,000:1.

In order to realize a full-array area dimming flat-panel display (ie, a flat-panel liquid crystal display including a flat light emitting diode backlight module), a non-flexible printed circuit board (ie, a flat printed circuit board) is conventionally used as the In the light-emitting diode lamp board in the light-emitting diode backlight module, the light-emitting diodes disposed on the front side surface of the non-flexible printed circuit board are divided into a plurality of dimming sub-areas, and can be used in the non-flexible printed circuit board. Driving circuits for individually and independently controlling the plurality of dimming sub-areas are provided on the rear side surface of the printed circuit board.

Compared with flat LCD monitors, curved LCD monitors can provide a more realistic experience, reduce image distortion, relax the eyes, and have a larger perceptual field of view. Therefore, curved LCD monitors have been widely used in medium-sized computer LCD monitors. or a large LCD TV. At present, curved edge-lit light bars and curved light guide plates are mostly used in curved liquid crystal displays as their backlight modules. Therefore, full-array area dimming cannot be achieved. If a flexible printed circuit board is used as a full-array area dimming backlight board required for a curved computer LCD monitor or a curved LCD TV, the required area is relatively large, and the cost of the flexible printed circuit board is too high. Moreover, the curved liquid crystal display is a straight line along the height direction, and only needs to form a curved surface along the width direction. In other words, the curved liquid crystal display only needs a one-dimensional curved surface, and the flexible printed circuit board can form a two-dimensional curved surface along the height direction and the width direction at the same time, so the mechanical strength of the flexible printed circuit board along the height direction is not enough to support The weight of the driving circuit required for full-array area dimming is to form a straight line, so it is not the best choice. Therefore, there is currently no suitable method to improve the contrast ratio and image quality of a curved liquid crystal display (ie, a curved liquid crystal display including a curved light-emitting diode backlight module) through full-array area dimming.

In view of this, how to improve the above deficiencies and apply full-array area dimming to medium and large curved liquid crystal displays, so that the industry can successfully establish a solution that meets market demands, will be an important issue in the technical field of the present invention.

In order to solve at least the above-mentioned problems, the present invention provides a full-array light-emitting diode curved light panel (Full-Array LED Curved Light Panel), which can include a plurality of light bars ( Light Bars) and a flexible reflective sheet (Flexible Reflective Sheet), each of the plurality of light bars may include a bar-shaped printed circuit board (Bar-Shaped PCB) and a bar-shaped printed circuit board disposed on the bar-shaped printed circuit board. A plurality of light emitting diodes on the front side surface. The circuit of the strip printed circuit board of each light bar is further divided into a plurality of dimming zone circuits (Dimming Zone Circuits). Each dimming sub-circuit is electrically connected to at least one light-emitting diode to adjust the luminous intensity of the at least one light-emitting diode of the dimming sub-circuit, thereby realizing the full array of light-emitting diode curved light panels. Local Dimming. The flexible reflective sheet has a plurality of first openings corresponding to the positions of a full array of light emitting diodes. The plurality of light bars are attached to a rear surface of the flexible reflective sheet through an adhesive along a height direction of the flexible reflective sheet, and the plurality of light emitting diodes of the plurality of light bars The plurality of first openings of the flexible reflective sheet are exposed toward a liquid crystal display panel (LCD Panel). Along a width direction of the flexible reflective sheet, the rear side surface of the flexible reflective sheet is bent toward a front side surface of the flexible reflective sheet to form a reflective curved surface of the full-array light-emitting diode curved light panel .

In order to solve at least the above problems, the present invention also provides a full-array light-emitting diode curved backlight module (Curved Full-Array LED Backlight Module), the full-array light-emitting diode curved backlight module can include the above A full-array light-emitting diode curved light panel, an optical film stack, and a rear frame, wherein the optical film stack is disposed facing the front surface of the flexible reflective sheet, And the rear frame is used for accommodating the full-array light-emitting diode curved lamp board and the optical film set.

In order to solve at least the above-mentioned problems, the present invention further provides a curved liquid crystal display. The curved liquid crystal display may include a curved liquid crystal display panel, the above-mentioned full array light emitting diode curved backlight module, and a front frame (Front Frame), wherein, the full-array light-emitting diode curved backlight module is used to provide the light source required by the curved liquid crystal display panel, the front frame is used for accommodating the curved liquid crystal display panel, and is connected with the full-array light-emitting diodes The rear frame of the curved backlight module is combined.

As described above, the full-array light-emitting diode curved light panel provided by the present invention includes a flexible reflective sheet and a plurality of light bars that are not connected to each other, wherein the plurality of light bars are attached to the flexible reflector A rear side surface of the sheet, each light bar includes a strip-shaped printed circuit board and a plurality of light emitting diodes arranged on a front side surface of the strip-shaped printed circuit board, and the strips are arranged on the strip-shaped printed circuit board. A plurality of light emitting diodes are exposed toward a liquid crystal display panel from a plurality of first openings of the flexible reflective sheet. With such an arrangement, a non-flexible printed circuit board can be selected as the plurality of strip-shaped printed circuit boards. Compared with the flexible printed circuit board, the non-flexible printed circuit board has lower cost and sufficient mechanical strength to support the weight of the driving circuit provided on the printed circuit board required for full-array area dimming. The full-array light-emitting diode curved light panel provided by the invention is conducive to realizing full-array area dimming. Accordingly, the full-array light-emitting diode curved light panel, the full-array light-emitting diode curved backlight module, and the curved liquid crystal display provided by the present invention can not only provide curved display, but also have a full-array area dimming function.

The above contents are not intended to limit the present invention, but merely describe the technical problems that can be solved by the present invention, the technical means that can be used, and the technical effects that can be achieved. Those with ordinary knowledge in the technical field to which the present invention pertains can further understand the details of various embodiments of the present invention according to the attached drawings and the contents described in the following embodiments.

The present invention will be described below through various embodiments, but these embodiments are not intended to limit the present invention to only be implemented according to the described operations, environments, applications, structures, processes or steps. For ease of description, content not directly related to the embodiments of the present invention or content that can be understood without special description will be omitted from the text and the drawings. In the drawings, the size of each element (Element) and the ratio between each element are only examples, and are not used to limit the present invention. Unless otherwise specified, in the following, the same reference numerals correspond to the same elements.

Unless specifically stated otherwise, "a" is not intended to limit quantity and should be construed as "one or more." Unless the context clearly dictates otherwise, "include" or "include" does not exclude items other than those listed. Unless the context clearly dictates otherwise, the term "and/or" means any and all combinations of the listed items.

Referring to FIG. 1 , it is an exploded view of a curved liquid crystal display according to some embodiments of the present invention. The content shown in FIG. 1 is only used as an example, and is not intended to limit the scope of the patent application of this case.

As shown in FIG. 1 , a curved liquid crystal display 1 may include a full-array light-emitting diode curved backlight module 91 , a curved liquid crystal display panel 93 , and a front frame 95 . The full-array light-emitting diode curved backlight module 91 can be used to provide the light source required by the curved liquid crystal display panel 93 , the front frame 95 can be used to accommodate the curved liquid crystal display panel 93 , and is connected to the full-array light-emitting diode curved backlight module 91 . Included is a post frame combination.

The curved liquid crystal display panel 93 can be a liquid crystal display panel used in various curved liquid crystal displays. During assembly, the liquid crystal display panel is formed into a curved surface and assembled in the front and rear frames. For example, the curved liquid crystal display panel 93 may be a thin film transistor liquid crystal display panel (Thin Film Transistor Liquid Crystal Display Panel, TFT-LCD Panel). The TFT-LCD panel may include a multi-layer structure, basically including a lower polarizer, a thin film transistor substrate, a liquid crystal layer, an upper polarizer, a color filter, and the like from bottom to top. When the current passes through the transistors on the thin film transistor substrate, the liquid crystal molecules in the liquid crystal layer can be deflected, thereby changing the polarization of the light, and then using the polarizer to determine the light and dark states of the pixels. In addition, the color filter can make each pixel contain three colors of red, blue and green, and these pixels that emit red, blue and green constitute the image picture.

Please refer to FIG. 1 and FIG. 2 , wherein FIG. 2 is an exploded view of a full-array light-emitting diode curved backlight module according to some embodiments of the present invention. The content shown in FIG. 2 is only used as an example, and is not intended to limit the scope of the patent application of this case.

As shown in FIG. 2 , the full-array light-emitting diode curved backlight module 91 may include a full-array light-emitting diode curved light panel 21 , an optical film stack 23 , a thermally conductive tape 25 , and a Rear Frame 27. The structure of the rear frame 27 and the structure of the front frame 95 of the curved liquid crystal display 1 are compatible with each other, so as to be combined with the front frame 95 of the curved liquid crystal display 1 .

The optical film set 23 may include a quantum dot enhancement film (QDEF), a brightness enhancement film, a diffusion film, or a combination thereof. The quantum dot enhancement film can convert the backlight light source generated by the full-array light-emitting diode curved light panel 21 into a white backlight light source. For example, the full-array light-emitting diode curved light panel 21 is composed of blue light-emitting diodes. The generated blue light can be partially converted into relatively pure red and green light after passing through the quantum dot enhancement film. Part of the blue light and the partially converted red and green light form a white backlight source, because the white backlight source is composed of relatively pure colors. It is composed of blue light, green light and red light, which helps to reduce the blue-green light crosstalk and the light transmittance of the color filter, so it can have better brightness performance and color gamut space performance. Brightness enhancement film is a film that corrects the direction of light by the principle of light refraction and reflection. It can concentrate the light on the front, and recycle and reuse the unused light outside the viewing angle, while improving the overall brightness and uniformity. It can achieve the effect of brightening, so it is also called a condensing sheet or a Prism Sheet. Diffuser film The diffuser film can provide a uniform surface light source for the curved liquid crystal display 1 . In detail, the diffuser film has scattering particles, so when the light passes through the diffuser film, it will continue to pass through two media with different refractive indices, so the light will undergo many phenomena of refraction, reflection and scattering. This creates the effect of optical diffusion.

Please refer to FIG. 1 , FIG. 2 , FIG. 3A and FIG. 3B , wherein FIG. 3A illustrates a full-array light-emitting diode curved light panel according to some embodiments of the present invention, and FIG. 3B shows the full-array light-emitting diode shown in FIG. 3A An exploded view of the diode curved panel. The contents shown in FIG. 3A and FIG. 3B are only used as an example, and are not intended to limit the scope of the patent application of the present application.

As shown in FIGS. 3A and 3B , the full-array light-emitting diode curved light panel 21 may include a plurality of light bars 11 and a flexible reflective sheet 13 . Each light bar 11 has a front side surface 11A and a back side surface 11B, and each light bar 11 includes a strip-shaped printed circuit board 111 and a plurality of light-emitting diodes disposed on the front-side surface 11A of the strip-shaped printed circuit board 111 Pole body 113 . The flexible reflective sheet 13 has a front side surface 13A and a rear side surface 13B, and has a plurality of first openings 131 corresponding to the positions of a full array of light emitting diodes. The plurality of first openings 131 may be rectangular openings, circular openings, or openings of other shapes. Please refer to FIG. 1 , FIG. 2 , FIG. 3A and FIG. 3B together, the plurality of light bars 11 are respectively attached through an adhesive along a height direction (direction parallel to the y-axis) of the flexible reflective sheet 13 . to the rear side surface 13B of the flexible reflective sheet 13 , and the plurality of light emitting diodes 113 of the plurality of light bars 11 face from the plurality of first openings 131 of the flexible reflective sheet 13 to the surface of the curved liquid crystal display 1 The liquid crystal display panel 93 is exposed. Along a width direction of the flexible reflective sheet 13 (direction parallel to the x-axis), the rear side surface 13B of the flexible reflective sheet 13 is bent toward the front side surface 13A of the flexible reflective sheet 13 to form the A reflective curved surface of the full-array light-emitting diode curved light panel 21 .

As for the thickness of the flexible reflection sheet 13, it can be determined according to requirements. For example, a thickness of the flexible reflective sheet 13 may be no greater than 500 microns, no greater than 300 microns, no greater than 200 microns, no greater than 100 microns, or no greater than other values.

The reflectivity of the flexible reflection sheet 13 can be determined according to requirements. For example, the reflectivity of the flexible reflective sheet 13 may be not less than 85%, not less than 90%, or not less than 95%, or not less than other values.

The plurality of light emitting diodes 113 of the plurality of light bars 11 may be composed of one of the following: blue light emitting diodes, white light emitting diodes converted by photoluminescent materials, deep violet light emitting diodes Light-emitting diodes, ultraviolet light-emitting diodes, or a combination of three light sources, red light-emitting diodes, green light-emitting diodes and blue light-emitting diodes, arranged alternately. If the plurality of light-emitting diodes 113 are blue light-emitting diodes, deep purple light-emitting diodes or ultraviolet light-emitting diodes, the optical film set 23 may include a quantum dot enhancement film to convert blue light into white light; if The plurality of light-emitting diodes 113 are white light-emitting diodes converted by photoluminescent materials, or three light sources of red light-emitting diodes, green light-emitting diodes and blue light-emitting diodes are arranged alternately. If the combination is formed, the optical film set 23 does not need to include a quantum dot enhancement film.

As for the plurality of light-emitting diodes 113 of the plurality of light bars 11 , they may be sub-millimeter-sized light-emitting diodes (Mini LEDs) or conventional-sized light-emitting diodes. Under extremely low power consumption, the use of a larger number of full-array sub-millimeter light-emitting diodes can increase the luminous brightness of the full-array light-emitting diode curved light panel 21, reaching a full-screen brightness of 1,000 nits. On the other hand, the local picture range can reach an ultra-high brightness of 2,000 nits. In addition, using more full-array sub-millimeter light-emitting diodes can realize backlight sources with more dimming zones, and adjust the light and dark changes to different degrees, thereby greatly reducing the power consumption of the liquid crystal display, and Improve the contrast ratio of the display screen (Contrast Ratio), increase the number of gray levels, and reduce the afterimage. When the contrast ratio of the LCD monitor is higher, it is easier to display vivid and rich colors to improve its image quality.

As for the material of the strip-shaped printed circuit board 111, it can be determined according to application requirements. For example, the strip-shaped printed circuit board 111 may be a printed circuit board composed of one of the following materials: epoxy resin (FR-4), bismaleimide modified triazine resin (BT), aluminum ( Aluminum), or polyimide (Polyimide). In addition, the strip-shaped printed circuit board 111 may be a non-flexible printed circuit board or a flexible printed circuit board.

Please refer to FIG. 1 , FIG. 2 , FIG. 3A , FIG. 3B , and FIG. 4 , wherein FIG. 4 illustrates a printed circuit board of a light bar in a full array light emitting diode curved light panel according to some embodiments of the present invention with its circuit diagram. The content shown in FIG. 4 is only used as an example, and is not intended to limit the scope of the patent application of this case.

As shown in FIG. 4 , the circuit of the strip-shaped printed circuit board 113 of each light bar 11 can be divided into a plurality of dimming zone circuits (Dimming Zone Circuits), and each dimming zone circuit is associated with at least one light-emitting diode 113 It is electrically connected to adjust the luminous intensity of the at least one light-emitting diode of the dimming sub-circuit, thereby realizing the regional dimming of the full-array light-emitting diode curved light panel 21 . For example, the full-array light-emitting diode curved light panel 21 may include m light bars 11, and the circuit of the strip-shaped printed circuit board 113 of each light bar 11 is divided into n dimming sub-circuits (marked as Z ₁ ~ Z _n ), there are p LEDs 113 in each dimming partition circuit, so that the full-array LED curved backlight module 91 can provide a total of m×n×p LED light sources. The number of dimming sub-areas of the full-array light-emitting diode curved backlight module 91 , that is, the value of m×n, can be set between tens to tens of thousands according to application requirements. The p light-emitting diodes in each dimming sub-circuit can be connected in series, in parallel, or a combination thereof. The anodes of the light _- emitting diodes in the plurality of dimming sub-circuits (marked as Z ₁ ~Zn ) can be commonly connected to a power supply port VLED, and the cathodes of the light-emitting diodes in the plurality of dimming sub-circuits Each can be connected to a drive signal port (marked as LED-1~LED-n).

As shown in FIG. 4 , in some embodiments, the light emitting diodes 113 on each light bar 11 may be arranged in two columns parallel to each other. In addition, the ratio of the number of m light bars to the height H ₁ and width W ₁ of the light bars 11 can be determined according to the size of the curved liquid crystal display panel; for example, the height H ₁ and the width W ₁ of each light bar 11 The ratio of can be not less than 5, not less than 10, not less than 20, or not less than other numerical values. In the embodiment of the 32-inch curved liquid crystal display panel, such as the light bar 11 shown in FIG. 4 , the height H ₁ and the width W ₁ may be 406 mm and 16.2 mm, respectively.

5A and 5B respectively illustrate a printed circuit board and its circuit of a light bar in a full array light emitting diode curved light panel according to some other embodiments of the present invention. The content shown in FIG. 5A or FIG. 5B is only an example, and is not intended to limit the scope of the patent application of the present application.

As shown in FIG. 5A , in some embodiments, the light emitting diodes 113 on each light bar 11 may be arranged as a separate column, and the ratio of the height H ₁ to the width W ₁ of each light bar 11 may be Not less than 5, not less than 10, not less than 20, not less than 30, or not less than other numerical values. As shown in FIG. 5B , in some embodiments, the light emitting diodes 113 on each light bar 11 can also be arranged in three columns parallel to each other, and each light bar 11 has a height H ₁ and a width W The ratio of ₁ may be not less than 5, not less than 10, not less than 15, or not less than other numerical values. In some embodiments, the light emitting diodes 113 on each light bar 11 may also be arranged in more columns parallel to each other.

Please refer to FIGS. 1-5 and 6 , wherein FIG. 6 illustrates a schematic diagram of a full-array area dimming backlight source provided by a full-array LED curved backlight module according to some embodiments of the present invention. In the above content, the full-array area dimming module of the liquid crystal display divides the image signal into m×n dimming areas, and performs brightness analysis and calculation according to each image area corresponding to the dimming area, and then automatically controls each image area. Brightness and darkness of the area backlight source. In this way, the backlight source of the full-array area dimming can be adjusted for different areas and varying degrees of light and shade, which can greatly reduce power consumption, improve the display contrast, increase the number of gray levels, and reduce afterimages, so as to improve the full-array area. Dimming LCD monitor picture quality. Compared with traditional non-area dimming liquid crystal displays, the backlight light source is generally in a fully bright state, and when displaying a dark state, it can only be achieved by reducing the liquid crystal transmittance, so they are not helpful for reducing power consumption. In contrast, when the full-array area dimming liquid crystal display displays a dark state picture, the brightness of the plurality of light-emitting diodes 113 corresponding to the dimming sub-area will decrease accordingly to display a dark state picture, thus reducing the overall The power consumption of the backlight source. The content shown in FIG. 6 is only used as an example, and is not intended to limit the scope of the patent application of this case.

As described above, the full-array light-emitting diode curved light panel 21 includes a flexible reflective sheet 13 and a plurality of light bars 11 that are not connected to each other, wherein the plurality of light bars 11 are attached to the flexible reflective sheet 13, each light bar 11 includes a strip-shaped printed circuit board 111 and a plurality of light-emitting diodes 113 disposed on the front-side surface 11A of the strip-shaped printed circuit board 111, and arranged on the strip-shaped printed circuit board 111. The plurality of light emitting diodes 113 on the circuit board 111 are exposed from the plurality of first openings 131 of the flexible reflective sheet 13 toward the liquid crystal display panel 93 of the curved liquid crystal display 1 . Through such an arrangement, a non-flexible printed circuit board can be selected as the strip-shaped printed circuit board 111 while maintaining the curved surface display. Compared with the flexible printed circuit board, due to the lower cost of the non-flexible printed circuit board, if the driving circuit required for regional dimming needs to be arranged on the light bar 11, the non-flexible printed circuit board and sufficient mechanical The strength is to support the weight of the driving circuit required for full-array area dimming, which is more conducive to manufacturing. Therefore, the full-array light-emitting diode curved light panel 21 is beneficial to realize the full-array area dimming of the curved light panel. Accordingly, the full-array light-emitting diode curved light panel 21, the full-array light-emitting diode curved backlight module 91, and the curved liquid crystal display 1 can not only provide curved display, but also have a full-array area dimming function. Therefore, as shown in FIG. 6, through various regional dimming algorithms, the full-array light-emitting diode curved backlight module 91 can form a curved light source with uneven brightness and darkness according to the curved image to be displayed, thereby enhancing the curved liquid crystal display. Image quality of display 1.

Please refer to FIG. 3A , FIG. 3B , FIG. 7 , and FIG. 8 , wherein FIG. 7 illustrates an optical film group support pin in a full-array light-emitting diode curved backlight module according to some embodiments of the present invention, and FIG. 8 illustrates a partial structure of a full-array light-emitting diode curved backlight module according to some embodiments of the present invention. The content shown in FIG. 7 or FIG. 8 is only an example, and is not intended to limit the scope of the patent application of the present application.

As shown in FIG. 3A , FIG. 3B , FIG. 7 and FIG. 8 , in some embodiments, the flexible reflective sheet 13 may further include a plurality of second openings 133 , and the plurality of light bars may further include a plurality of optical films Chipset Support Pin 115 . The plurality of second openings 133 may be rectangular openings, circular openings, or openings of other shapes to meet different requirements. The plurality of optical film set support pins 115 may be disposed on the front side surfaces 11A of the plurality of strip-shaped printed circuit boards 111 of the plurality of light bars 11 and extend from the plurality of second openings of the flexible reflective sheet 13 133 is exposed toward the liquid crystal display panel 93 of the curved liquid crystal display 1 . In addition, the optical film set 23 is arranged to be in contact with the plurality of optical film set support pins 115 exposed from the plurality of second openings 133 of the flexible reflective sheet 13 so as to be in contact with the flexible reflective sheet 13 An optical distance (OD) OD is formed between the optical film group 23 . In other words, the height of the optical film set support pin 115 determines the optical distance OD between the flexible reflective sheet 13 and the optical film set 23 . The optical distance OD can be determined according to requirements. For example, the optical distance OD may be no greater than 40 mm, no greater than 30 mm, no greater than 20 mm, no greater than 10 mm, no greater than 5 mm, no greater than 3 mm, or no greater than other values.

Please refer to FIG. 4 and FIG. 8 . First, as shown in FIG. 4 , along the height direction (direction parallel to the y-axis) of the flexible reflective sheet 13 , the plurality of light-emitting diodes 113 of the plurality of light bars 11 have substantially the same first spacing P ₁ . The size of the first pitch P ₁ can be determined according to the height of the curved lamp panel and the number of the light emitting diodes 113 . As also shown in FIG. 8 , along a curved surface of the flexible reflective sheet 13 , the plurality of light emitting diodes 113 of the plurality of light bars 11 have substantially the same second pitch P ₂ . The size of the second pitch P ₂ can be determined according to the width of the full-array light-emitting diode curved light panel, the number of light bars 11 , and the size of the light bars 11 . The difference between the first pitch P ₁ and the second pitch P ₂ can be determined according to the requirement of the uniformity of the backlight source. For example, the ratio between the first pitch P ₁ and the second pitch P ₂ may be no greater than 2, no greater than 1.5, no greater than 1.25, or no greater than other numerical values.

Please refer to FIG. 9, which illustrates the curvature of a liquid crystal display according to some embodiments of the present invention. The content shown in FIG. 9 is only used as an example, and is not intended to limit the scope of the patent application of this case.

In some embodiments, the liquid crystal display 1 can provide a curved display with a single curvature, but in some other embodiments, the liquid crystal display 1 can also provide a curved display with multiple curvatures. In the embodiment in which the liquid crystal display 1 provides a single-curvature curved display, the flexible reflective sheet 13 in the full-array light-emitting diode curved light panel 21 can be formed as a single-curved reflective sheet. In addition, in the embodiment in which the liquid crystal display 1 provides a curved display with a plurality of curvatures, the flexible reflection sheet 13 in the full-array light-emitting diode curved light panel 21 can be bent to form a reflection with a plurality of curvatures piece. For example, as shown in FIG. 9 , the liquid crystal display 1 provides two curved surfaces with different curvatures, namely a first curvature corresponding to the first radius R1 and a second curvature corresponding to the second radius R1 , and the flexible reflective sheet 13 in the full-array light-emitting diode curved light panel 21 can be formed as a reflective sheet with the first curvature and the second curvature.

Please refer to FIG. 2 , FIG. 3A , FIG. 3B and FIG. 10A , wherein FIG. 10A illustrates a continuous thermally conductive adhesive tape (Continuous Thermally Conductive Adhesive Tape) according to some embodiments of the present invention. The content shown in FIG. 10A is only an example, and is not intended to limit the scope of the patent application of the present application. As shown in FIG. 2 , FIG. 3A , FIG. 3B and FIG. 10A , in some embodiments, the rear side surfaces 11B of the plurality of light bars 11 can be attached to the full-array light-emitting diodes through a continuous thermal conductive tape 25 on the rear frame 27 of the polar body curved backlight module 91 .

Please refer to FIG. 2 , FIG. 3A , FIG. 3B and FIG. 10B , wherein FIG. 10B illustrates Bar-Shaped Thermally Conductive Adhesive Tapes (Bar-Shaped Thermally Conductive Adhesive Tapes) that are not connected to each other according to some embodiments of the present invention. The content shown in FIG. 10B is only an example, and is not intended to limit the scope of the patent application of this case. As shown in FIG. 2 , FIG. 3A , FIG. 3B and FIG. 10B , in some embodiments, the rear side surfaces 11B of the plurality of light bars 11 can also pass through a plurality of unconnected strip-shaped thermally conductive tapes 25 respectively. It is attached to the rear frame 27 of the full-array light-emitting diode curved backlight module 91 . In some embodiments, the continuous thermally conductive tape 25 or the plurality of strip-shaped thermally conductive tapes 25 is composed of glass fiber fabric. The thermal conductivity of the thermally conductive tape 25 can be determined according to requirements. For example, the thermal conductivity of the continuous thermally conductive tape 25 or the plurality of strip-shaped thermally conductive tapes 25 may be no greater than 3.5 W/mK, no greater than 2.5 W/mK, no greater than 1.5 W/mK, or no greater than other values.

In some embodiments, the rear surfaces 11B of the plurality of light bars 11 can also be fixed to the rear of the full-array light-emitting diode curved backlight module 91 through various known fixing elements (eg, screws). frame 27.

Please refer to FIG. 11A and FIG. 11B , wherein FIG. 11A illustrates a light bar and a centralized area dimming driver module and area dimming in a full-array light-emitting diode curved backlight module according to some embodiments of the present invention The electrical and signal connections between the controller modules, and FIG. 11B illustrates a light bar and a centralized area dimming driver mode in a full array LED curved backlight module according to some other embodiments of the present invention. Electrical and signal connections between the group and the regional dimming controller modules. The content shown in FIG. 11A or FIG. 11B is only an example, and is not intended to limit the scope of the patent application of the present application.

As shown in FIG. 11A , in some embodiments, the full-array LED curved backlight module 91 further includes at least one main printed circuit board 20 , and the at least one main printed circuit board 20 includes at least one main printed circuit board 20 disposed on the at least one main printed circuit board. A local dimming controller module (Local Dimming Controller Module) 201 and a centralized local dimming driver module (Local Dimming Driver Module) 203 on the circuit board 20 . The area dimming controller module 201 controls the plurality of dimming sub-circuits of the plurality of strip-shaped printed circuit boards 111 of the plurality of light bars 11 respectively and independently through the centralized area dimming driver module 203 A plurality of driving current signals are required. In addition, the full-array light-emitting diode curved light panel 21 in the full-array light-emitting diode curved backlight module 91 further includes a plurality of connectors 117 , and the plurality of connectors 117 are respectively disposed on the plurality of light bars 11 . On the front side surfaces 11A of the plurality of strip-shaped printed circuit boards 111 , the plurality of strip-shaped printed circuit boards 111 are electrically connected to the at least one main printed circuit board 20 through wires. More specifically, each connector 117 can be mated with a connector 203A on at least one main printed circuit board 20, so that the corresponding strip printed circuit board 111 can be electrically connected to the centralized area dimming driver via wires Module 203. In addition, through the connector 203B and the connector 201B on at least one main printed circuit board 20 , the centralized area dimming driver module 203 can be electrically connected to the area dimming controller module 201 via wires. The centralized area dimming driver module 203 and the area dimming controller module 201 may be respectively disposed on a plurality of main printed circuit boards 20 as shown in FIG. 11A , but may also be disposed together on a single main printed circuit board 20 (not shown).

As shown in FIG. 11A , in FIG. 11B , the full-array light-emitting diode curved backlight module 91 further includes at least one main printed circuit board 20 , and the at least one main printed circuit board 20 includes a regional dimming controller module 201 and a Centralized area dimming driver module 203 . However, in FIG. 11B , the plurality of connectors 117 included in the full-array light-emitting diode curved backlight module 91 are respectively disposed on the rear side surfaces of the plurality of strip-shaped printed circuit boards 111 of the plurality of light bars 11 . 11B instead of the front side surface 11A as shown in FIG. 11A.

Please refer to FIGS. 11A , 11B, 12A and 12B, wherein FIGS. 12A and 12B illustrate the area dimming controller module and the Setting, electrical connection and control structure of the centralized area dimming driver module. The content shown in FIG. 12A and FIG. 12B is only an example, and is not intended to limit the scope of the patent application of the present application.

In the content shown in FIG. 12A and FIG. 12B , the zone dimming controller module 201 disposed on the at least one main printed circuit board 20 can be used for brightness information (Brightness Information) and zone information (Zone Information) of each image and an image synchronization signal to generate brightness information of zones (Brightness Information of Zones), wherein the brightness information of the zone includes a plurality of zone brightness values (Brightness Data of Zones) respectively corresponding to a plurality of dimming zones (Dimming Zones), and the A plurality of dimming sub-areas respectively correspond to a plurality of dimming sub-area circuits (eg, m light bars) of each strip-shaped printed circuit board 111 of the plurality of strip-shaped printed circuit boards 111 of the plurality of light bars 11 (eg, m light bars). n dimming zones: Z ₁ ~Z _n ).

For example, the regional dimming controller module 201 can be implemented as a Microcontroller Unit (MCU)/microcontroller. A microcontroller unit is a microcomputer that integrates a central processing unit (CPU), memory, timer/counter, and various input and output interfaces on an integrated circuit chip. Initially, the microcontroller can read the pre-set partition information in its memory. Then, the micro-control unit can receive an image synchronization signal, and receive the brightness information of an image synchronously according to the pulse wave timing of the image synchronization signal. Then, the micro-control unit will convert the luminance data of each pixel of the image (that is, the three-color information of R, G, and B) into 8-bit (0~255) grayscale values, and according to the partition information, convert the The grayscale values of the pixel luminance data included in the same partition are uniformized to obtain the uniformized grayscale values of each partition. The uniformized gray value of each partition is a partition brightness data, and these gray values are called partition brightness information. In addition, the micro-control unit transmits the partition brightness information to the centralized area dimming driver module 203 in real time according to the pulse timing of the image synchronization signal.

12A and 12B, the centralized area dimming driver module 203 disposed on the at least one main printed circuit board 20 may include a plurality of sub-modules (for example, in FIG. 12B, marked as 2031-1~2031- m submodules of m), and each submodule may include a communication module 30 , a register system 32 electrically connected to the communication module 30 , and a plurality of registers electrically connected to the register system 32 . The channel signal generator 34 and a multi-channel current driving circuit 36 electrically connected to the multi-channel signal generator 34 .

The communication module 30 can be used to receive the image synchronization signal and the partition brightness information from the regional dimming controller module 201, and store the partition brightness information in the register system 32 according to the pulse timing of the image synchronization signal .

The register system 32 may include a plurality of independent registers, wherein the plurality of independent registers are used to respectively store a corresponding portion of the luminance information of the partition according to the pulse timing of the image synchronization signal (ie, corresponding to a certain A partition brightness data of a dimming partition). The plurality of independent registers are respectively mapped to the plurality of channels CH ₁ ˜CH _n , and the plurality of channels CH ₁ ˜CH _n are respectively corresponding to the plurality of dimming partition circuits Z ₁ ˜Z 1 ˜ of each strip-shaped printed circuit board 111 . Z _n .

其中，D是工作週期，G是分區亮度數據（以灰階表示）。 The multi-channel signal generator 34 can generate a plurality of current driving signals corresponding to the plurality of channels CH ₁ ˜CH _n for each light bar 11 according to the partition brightness information. For example, the multi-channel signal generator 34 may be a multi-channel Pulse Width Modulation (PWM) signal generator, which converts each partition luminance data into a PWM signal (ie, a current driving signal) The duty cycle (Duty Cycle), and the PWM signal is transmitted to a corresponding channel. Taking an 8-bit (8-bit) digital signal as an example, the definition of the duty cycle of the PWM signal is as follows:

Among them, D is the duty cycle, and G is the partition brightness data (represented in grayscale).

The multi-channel current driving circuit 36 has a plurality of driving signal ports (labeled as LED-1 ˜LED-n) corresponding to the plurality of channels CH ₁ ˜CH _n , respectively. The multi-channel current driving circuit 36 can be used to separately and independently control the driving currents of the LEDs 113 corresponding to the plurality of channels CH ₁ ˜CH _n according to the plurality of current driving signals generated by the multi-channel signal generator 34 . , in order to realize the regional dimming of the full-array backlight module.

Please refer to FIG. 13, which illustrates the relationship between a light bar, a distributed area dimming driver module and an area dimming controller module in a full-array LED curved backlight module according to some embodiments of the present invention electrical and signal connections between them. The content shown in FIG. 13 is only an example, and is not intended to limit the scope of the patent application of this case.

As shown in FIG. 13 , in some embodiments, the full-array light-emitting diode curved backlight module 91 further includes a main printed circuit board 20 , and the main printed circuit board 20 includes a A regional dimming controller module 201 . In addition, the full-array light-emitting diode curved light panel 21 in the full-array light-emitting diode curved backlight module 91 further includes a plurality of connectors 117 , and the plurality of connectors 117 are respectively disposed on the plurality of light bars 11 . On the rear side surface 11B of the plurality of strip-shaped printed circuit boards 111 . The full-array light-emitting diode curved backlight module 91 further includes a plurality of distributed area dimming driver modules 205 , and the plurality of distributed area dimming driver modules 205 are respectively disposed in the plurality of the plurality of light bars 11 . on the rear side surface 11B of the strip-shaped printed circuit board 111 . More specifically, each connector 117 can be electrically connected to the connector 201B on the main printed circuit board 20 via a wire, so that the rear side surface of the strip-shaped printed circuit board 111 disposed on the corresponding light bar 11 The distributed area dimming driver module 205 on 11B is electrically connected to the area dimming controller module 201 disposed on the main printed circuit board 20 via wires. The area dimming controller module 201 controls the plurality of dimming zones of the plurality of strip-shaped printed circuit boards 111 of the plurality of light bars 11 respectively and independently through the plurality of distributed area dimming driver modules 205 A plurality of driving current signals required by the circuit.

Please refer to FIG. 13 , FIG. 14A and FIG. 14B , wherein FIG. 14A and FIG. 14B illustrate the area dimming controller module and the distributed area in the full-array LED curved backlight module according to some embodiments of the present invention The setting, electrical connection and control structure of the dimming driver module. The content shown in FIG. 14A and FIG. 14B is only an example, and is not intended to limit the scope of the patent application of the present application.

Functionally, the area dimming controller module 201 in FIG. 14A is basically the same as the area dimming controller module 201 in FIG. 12A . Therefore, in the content shown in FIG. 14A and FIG. 14B , the regional dimming controller module 201 can also be used to generate partition brightness information according to the brightness information and partition information of each image and an image synchronization signal, and according to the image synchronization signal The pulse timing, transmits the zone brightness information to the plurality of distributed zone dimming driver modules 205 (or marked as 205-1 to 205-m) in real time. For other details of the area dimming controller module 201, reference may be made to the above-mentioned examples related to FIG. 14A and FIG. 14B .

In terms of functions, the distributed area dimming driver modules 205-1 to 205-m shown in FIG. 14B are basically the same as the sub-modules 2031-m included in the centralized area dimming driver module 203 shown in FIG. 12B. 1~2031-m are the same. Therefore, in the content shown in FIG. 14A and FIG. 14B , each of the distributed area dimming driver modules 205 - 1 to 205 - m may also include a communication module 30 , a communication module 30 electrically connected to the communication module 30 . A register system 32 , a multi-channel signal generator 34 electrically connected to the register system 32 , and a multi-channel current driving circuit 36 electrically connected to the multi-channel signal generator 34 . For other details of the communication module 30 , the register system 32 , the multi-channel signal generator 34 , and the multi-channel current driving circuit 36 , please refer to the above examples related to FIGS. 12A and 12B .

The above embodiments are not intended to limit the present invention. Any other embodiments produced by modifying, changing, adjusting or integrating the above-mentioned embodiments, as long as those with ordinary knowledge in the technical field to which the present invention pertains are not difficult to conceive, are intended to be covered within the scope of the patent application of this case.

As follows:

1: Curved LCD Display

91: Full array light emitting diode curved backlight module

93: Curved LCD panel

95: Front Frame

x, y, z: axes that are perpendicular to each other

21: Full array light emitting diode curved light board

23: Optical diaphragm set

25: Thermal tape

27: Rear frame

11: Light bar

11A: Front side surface of light bar

11B: The rear side surface of the light bar

111: Strip printed circuit board

113: Light Emitting Diode

115: Support pin for optical film group

13: Flexible reflective sheet

13A: Front side surface of flexible reflective sheet

13B: Rear side surface of flexible reflective sheet

131: The first opening of the flexible reflective sheet

133: The second opening of the flexible reflective sheet

Z ₁ ~Z _n : Dimming partition circuit

P ₁ : first pitch

VLED: Power supply port

LED-1~LED-n: drive signal port

H ₁ : The height of the light bar

W ₁ : The width of the light bar

OD: Optical Distance

P ₂ : Second pitch

R1: first radius

R2: Second radius

117: Connector

20: Main PCB

201: Regional dimming controller module

203: Centralized area dimming driver module

203A, 203B, 201B: Connectors

111-1~111-m: Strip printed circuit board

2031-1~2031-m: Sub-modules of centralized area dimming driver modules

30: Communication module

32: Scratchpad system

34: Multi-channel signal generator

36: Multi-channel current drive circuit

CH ₁ ~CH _n : Channels

205, 205-1~205-m: Distributed area dimming driver module

The accompanying drawings assist in explaining various embodiments of the invention, in which: 1 is an exploded view of a curved liquid crystal display according to some embodiments of the present invention; 2 is an exploded view of a full-array light-emitting diode curved backlight module according to some embodiments of the present invention; 3A illustrates a full array light emitting diode curved light panel according to some embodiments of the present invention; 3B is an exploded view of the full-array light-emitting diode curved light panel shown in FIG. 3A; 4 illustrates a printed circuit board and its circuit diagram of a light bar in a full array light emitting diode curved light panel according to some embodiments of the present invention; 5A and 5B respectively illustrate a printed circuit board of a light bar in a full array light emitting diode curved light panel according to some other embodiments of the present invention; 6 illustrates a schematic diagram of a backlight light source with full-array area dimming provided by a full-array light-emitting diode curved backlight module according to some embodiments of the present invention; 7 illustrates an optical film group support pin in a full-array light-emitting diode curved backlight module according to some embodiments of the present invention; 8 illustrates a partial structure of a full-array light-emitting diode curved backlight module according to some embodiments of the present invention; 9 illustrates the curvature of a liquid crystal display according to some embodiments of the present invention; 10A illustrates a continuous thermally conductive tape according to certain embodiments of the present invention; 10B illustrates a strip of thermally conductive tape that is not connected to each other in accordance with certain embodiments of the present invention; 11A illustrates the electrical connection between a light bar, the centralized area dimming driver module and the area dimming controller module in a full-array light-emitting diode curved backlight module according to some embodiments of the present invention signal connection; 11B illustrates the electrical properties between a light bar and the centralized area dimming driver module and the area dimming controller module in the full array LED curved backlight module according to some other embodiments of the present invention connected to the signal; FIGS. 12A and 12B illustrate the arrangement, electrical connection and connection of the area dimming controller module and the centralized area dimming driver module in the full-array light-emitting diode curved backlight module according to some embodiments of the present invention. control architecture; 13 illustrates the electrical properties between a light bar and a distributed area dimming driver module and an area dimming controller module in a full-array LED curved backlight module according to some embodiments of the present invention connected to the signal; and FIGS. 14A and 14B illustrate the arrangement, electrical connection and configuration of the area dimming controller module and the distributed area dimming driver module in the full-array light-emitting diode curved backlight module according to some embodiments of the present invention. control architecture.

none

21: Full array light emitting diode curved backlight panel

11: Light bar

11A: Front side surface of light bar

11B: The rear side surface of the light bar

111: Strip printed circuit board

113: Light Emitting Diode

115: Support pin for optical film group

13: Flexible reflective sheet

13A: Front side surface of flexible reflective sheet

13B: Rear side surface of flexible reflective sheet

131: The first opening of the flexible reflective sheet

133: The second opening of the flexible reflective sheet

Claims (24)

A full-array light-emitting diode curved light panel, comprising: A plurality of light bars, wherein each light bar in the plurality of light bars comprises a strip-shaped printed circuit board and a plurality of light-emitting diodes disposed on a front side surface of the strip-shaped printed circuit board, wherein each The circuit of the strip-shaped printed circuit board of the light bar is divided into a plurality of dimming sub-regional circuits, wherein each dimming sub-regional circuit is electrically connected with at least one light-emitting diode to adjust the at least one of the dimming sub-regional circuits the luminous intensity of the light-emitting diode, thereby realizing the regional dimming of the full-array light-emitting diode curved light panel; and a flexible reflective sheet with a plurality of first openings corresponding to the positions of a full array of light-emitting diodes; Wherein, the plurality of light bars are attached to a rear surface of the flexible reflective sheet through an adhesive along a height direction of the flexible reflective sheet, and the plurality of light emitting two of the plurality of light bars The polar body is exposed from the plurality of first openings of the flexible reflective sheet toward a liquid crystal display panel; and Wherein, along a width direction of the flexible reflective sheet, the rear side surface of the flexible reflective sheet is bent toward a front side surface of the flexible reflective sheet to form a surface of the full-array light-emitting diode curved light panel Reflective surface. The full-array light-emitting diode curved light panel according to claim 1, wherein: The flexible reflective sheet also includes a plurality of second openings; and The plurality of light bars also include a plurality of optical film set support pins, the plurality of optical film set support pins are disposed on the front side surfaces of the plurality of strip-shaped printed circuit boards of the plurality of light bars, and are extended from the flexible The plurality of second openings of the reflective sheet are exposed toward the liquid crystal display panel. The full-array light-emitting diode curved light panel of claim 2, wherein the plurality of first openings and the plurality of second openings are rectangular openings or circular openings. The full-array light-emitting diode curved light panel of claim 1, wherein the plurality of light-emitting diodes of the plurality of light bars are composed of one of the following: blue light-emitting diodes, light-emitting diodes White light-emitting diodes, deep purple light-emitting diodes, ultraviolet light-emitting diodes, or three light sources alternated by red light-emitting diodes, green light-emitting diodes, and blue light-emitting diodes Arranged combinations. The full-array light-emitting diode curved light panel of claim 1, wherein the plurality of light-emitting diodes of the plurality of light bars are sub-millimeter light-emitting diodes. The full-array light-emitting diode curved light panel of claim 1, wherein the plurality of light-emitting diodes of the plurality of light bars are arranged in one column or a plurality of columns parallel to each other. The full-array light-emitting diode curved light panel according to claim 1, wherein: along the height direction of the flexible reflective sheet, the plurality of light emitting diodes of the plurality of light bars have substantially the same first spacing; and Along a curved surface of the flexible reflective sheet, the plurality of light emitting diodes of the plurality of light bars have substantially the same second spacing. The full-array light-emitting diode curved light panel of claim 7, wherein the ratio between the first spacing and the second spacing is not greater than 2, not greater than 1.5, or not greater than 1.25. The full-array light-emitting diode curved light panel according to claim 1, wherein each strip-shaped printed circuit board in the plurality of strip-shaped printed circuit boards is composed of one of the following materials: epoxy resin, Bismaleimide modified triazine resin, aluminum, or polyimide. The full-array light-emitting diode curved light panel as claimed in claim 1, wherein a thickness of the flexible reflective sheet is no greater than 500 microns, no greater than 300 microns, no greater than 200 microns, or no greater than 100 microns. The full-array light-emitting diode curved light panel of claim 1, wherein a reflectivity of the flexible reflective sheet is not less than 85%, not less than 90%, or not less than 95%. The full-array light-emitting diode curved light panel of claim 1, wherein the flexible reflection sheet is formed as a reflection sheet with a single curvature or a reflection sheet with a plurality of curvatures. The full-array light-emitting diode curved light panel as claimed in claim 1, wherein the plurality of light bars are attached to each other through a continuous thermally conductive tape, or through a plurality of unconnected strip-shaped thermally conductive tapes respectively. on a rear frame. The full-array light-emitting diode curved light panel of claim 13, wherein the continuous thermally conductive adhesive tape or the plurality of strip-shaped thermally conductive adhesive tapes is composed of glass fiber fabric. The full-array light-emitting diode curved light panel of claim 13, wherein a thermal conductivity of the continuous thermally conductive tape or the plurality of strip-shaped thermally conductive tapes is not greater than 3.5 W/mK and not greater than 2.5 W/mK , or not greater than 1.5 W/mK. The full-array light-emitting diode curved light board according to claim 1, further comprising: a plurality of connectors, respectively disposed on the front side surface or the rear side surface of the plurality of strip-shaped printed circuit boards of the plurality of light bars , so that the plurality of strip-shaped printed circuit boards are electrically connected to an external at least one main printed circuit board through wires, wherein, the at least one main printed circuit board is provided with an area dimming controller module and a centralized area A dimming driver module, and the area dimming controller module individually and independently controls the plurality of dimming of the plurality of strip-shaped printed circuit boards of the plurality of light bars through the centralized area dimming driver module A plurality of driving current signals required by the partition circuit. The full-array light-emitting diode curved light panel as claimed in claim 1, further comprising: A plurality of connectors are respectively disposed on the rear side surfaces of the plurality of strip-shaped printed circuit boards of the plurality of light bars, so that the plurality of strip-shaped printed circuit boards are electrically connected to an external main printed circuit via wires a board, the main printed circuit board is provided with a regional dimming controller module; and A plurality of distributed area dimming driver modules are respectively disposed on the rear side surfaces of the plurality of strip-shaped printed circuit boards of the plurality of light bars; Wherein, the area dimming controller module separately and independently controls the plurality of dimming sub-circuits of the plurality of strip-shaped printed circuit boards of the plurality of light bars through the plurality of distributed area dimming driver modules. A plurality of driving current signals are required, and each distributed area dimming driver module in the plurality of distributed area dimming driver modules includes: a communication module for receiving an image synchronization signal and partition brightness information from the area dimming controller module; A register system is electrically connected to the communication module and includes a plurality of independent registers, wherein the plurality of independent registers are used to separately store the brightness of the partition according to a pulse timing of the image synchronization signal a corresponding part of the information, the plurality of independent registers are respectively mapped to a plurality of channels, and the plurality of channels are respectively corresponding to a plurality of dimming partition circuits of each strip-shaped printed circuit board; a multi-channel signal generator, electrically connected to the register system, and used for respectively generating a plurality of current driving signals corresponding to the plurality of channels according to the partition luminance information; and A multi-channel current driving circuit is electrically connected to the multi-channel signal generator, and is used for separately and independently controlling the driving currents of the light-emitting diodes corresponding to the plurality of channels according to the plurality of current driving signals. A full-array light-emitting diode curved backlight module, comprising: The full-array light-emitting diode curved light panel according to claim 1; an optical film set facing the front side surface of the flexible reflective sheet; and a rear frame for accommodating the full-array light-emitting diode curved light panel and the optical film set. The full-array light-emitting diode curved backlight module as claimed in claim 18, wherein: The flexible reflective sheet also includes a plurality of second openings; The plurality of light bars also include a plurality of optical film group support pins, the plurality of optical film group support pins are disposed on the front side surfaces of the plurality of strip-shaped printed circuit boards of the plurality of light bars, and are removed from the flexible The plurality of second openings of the reflective sheet are exposed toward the liquid crystal display panel; and The optical film set is arranged to be in contact with the plurality of optical film set support pins exposed from the plurality of second openings of the flexible reflective sheet, so as to be in contact with the flexible reflective sheet and the optical film set An optical distance is formed between them. The full-array light-emitting diode curved backlight module as claimed in claim 19, wherein the optical distance is no greater than 40 mm, no greater than 30 mm, no greater than 20 mm, no greater than 10 mm, no greater than 5 mm mm, or not more than 3 mm. The full-array light-emitting diode curved backlight module of claim 18, wherein the optical film set comprises a quantum dot enhancement film, a brightness enhancement film, or a diffusion film. The full-array light-emitting diode curved backlight module according to claim 18, further comprising: at least one main printed circuit board; and A plurality of connectors are respectively disposed on the front side surface or the rear side surface of the plurality of strip-shaped printed circuit boards of the plurality of light bars, so that the plurality of strip-shaped printed circuit boards are electrically connected to the at least one through wires main printed circuit board; Wherein, the at least one main printed circuit board includes: A regional dimming controller module is disposed on the at least one main printed circuit board, and generates subregional luminance information according to the luminance information and subregional information of each image and an image synchronization signal, wherein the subregional luminance information includes corresponding to A plurality of sub-area brightness data of a plurality of dimming sub-areas, and the plurality of dimming sub-areas respectively correspond to a plurality of dimming of each strip-shaped printed circuit board of the plurality of strip-shaped printed circuit boards of the plurality of light bars partition circuits; and A centralized area dimming driver module disposed on the at least one main printed circuit board, wherein the centralized area dimming driver module includes a plurality of sub-modules, and each sub-module includes: a communication module for receiving an image synchronization signal and partition brightness information from the area dimming controller module; A register system is electrically connected to the communication module and includes a plurality of independent registers, wherein the plurality of independent registers are used to separately store the brightness of the partition according to a pulse timing of the image synchronization signal a corresponding part of the information, the plurality of independent registers are respectively mapped to a plurality of channels, and the plurality of channels are respectively corresponding to a plurality of dimming partition circuits of a corresponding strip printed circuit board; a multi-channel signal generator, electrically connected to the register system, and used for respectively generating a plurality of current driving signals corresponding to the plurality of channels according to the partition luminance information; and A multi-channel current driving circuit is electrically connected to the multi-channel signal generator, and is used for separately and independently controlling the driving currents of the light-emitting diodes corresponding to the plurality of channels according to the plurality of current driving signals. The full-array light-emitting diode curved backlight module according to claim 18, further comprising: a main printed circuit board; and a plurality of connectors, respectively disposed on the rear side surfaces of the plurality of strip-shaped printed circuit boards of the plurality of light bars, so that the plurality of strip-shaped printed circuit boards are electrically connected to the main printed circuit board through wires; Among them, the main printed circuit board contains: A regional dimming controller module is disposed on the main printed circuit board, and is used for generating partition brightness information according to the brightness information and partition information of each image and an image synchronization signal, wherein the partition brightness information includes corresponding to A plurality of sub-regional brightness data of a plurality of dimming sub-regions, and the plurality of dimming sub-regions correspond to the plurality of dimming sub-regional circuits of the plurality of strip-shaped printed circuit boards of the plurality of light bars; and Wherein, the plurality of strip-shaped printed circuit boards of the plurality of light bars further include a plurality of distributed area dimming driver modules, and are respectively disposed on the rear sides of the plurality of strip-shaped printed circuit boards of the plurality of light bars On the surface, each distributed area dimming driver module of the plurality of distributed area dimming driver modules further includes: a communication module for receiving an image synchronization signal and partition brightness information from the area dimming controller module; A register system is electrically connected to the communication module and includes a plurality of independent registers, wherein the plurality of independent registers are used to separately store the brightness of the partition according to a pulse timing of the image synchronization signal a corresponding part of the information, the plurality of independent registers are respectively mapped to a plurality of channels, and the plurality of channels are respectively corresponding to a plurality of dimming partition circuits of a corresponding strip printed circuit board; a multi-channel signal generator, electrically connected to the register system, and used for respectively generating a plurality of current driving signals corresponding to the plurality of channels according to the partition luminance information; and A multi-channel current driving circuit is electrically connected to the multi-channel signal generator, and is used for separately and independently controlling the driving currents of the light-emitting diodes corresponding to the plurality of channels according to the plurality of current driving signals. A curved liquid crystal display, comprising: a curved liquid crystal display panel; The full-array light-emitting diode curved backlight module as claimed in claim 18 is used to provide the light source required by the curved liquid crystal display panel; and A front frame is used for accommodating the curved liquid crystal display panel and combined with the rear frame of the full array light emitting diode curved backlight module.

Images