Micro light emitting diode display panel

Abstract

A micro light emitting diode display panel includes a display area divided into a plurality of blocks, a plurality of drivers respectively driving micro light emitting diodes of corresponding blocks, and at least one timing controller for controlling the drivers. Anodes of micro light emitting diodes of the same column in each block are connected to corresponding data lines, and cathodes of micro light emitting diodes of the same row are connected to corresponding common lines.

Description

TECHNICAL FIELD

[0001] The present application relates to a micro light emitting diode display panel, and more particularly, to a micro light emitting diode display panel with enhanced display quality. BACKGROUND

[0002] A micro light emitting diode (micro LED, mLED or μLED) display panel is a type of flat panel display composed of individual microscopic light emitting diodes with a size ranging from 1 to 100 micrometers. Compared to a conventional liquid crystal display panel, a micro light emitting diode display panel has greater contrast ratio and faster response time, and consumes less power. Although a micro light emitting diode also has the low power consumption characteristic as an organic light emitting diode (OLED), a micro light emitting diode has higher brightness, higher luminous efficacy and longer lifetime than an organic light emitting diode because it uses a III-V diode technology (e.g. gallium nitride).

[0003] As the resolution of a micro light emitting diode display panel increases, the number of drivers used to drive the micro light emitting diodes also increases. Since the impedance and parasitic capacitance of metal wires cause a voltage drop effect, the function of the light emitting diode display panel is disrupted. In addition, as the number of scan lines increases, if the frame rate is unchanged, the scan period of each scan line will become shorter, resulting in poor display quality grayscale fineness. Furthermore, as the number of common terminals increases, the overall cost increases substantially.

[0004] Therefore, there is an urgent need to propose a novel mechanism to overcome the shortcomings of conventional micro light emitting diode display panels. SUMMARY

[0005] In view of the above, one of the purposes of the embodiments of the present application is to propose a micro light emitting diode display panel that can effectively prevent voltage drop effects and enhance display quality.

[0006] According to the embodiments of the present application, a micro light emitting diode display panel includes a display area, a plurality of drivers and at least one timing controller. The display area is divided into a plurality of blocks. The plurality of drivers respectively drive the micro light emitting diodes of the corresponding blocks. The timing controller controls the plurality of drivers. The anodes of the micro light emitting diodes of the same column in each block are connected to a corresponding data line, and the cathodes of the micro light emitting diodes of the same row are connected to a corresponding common line.

[0007] Preferably, the micro light emitting diodes of each block include a row of red micro light emitting diodes, a row of green micro light emitting diodes and a row of blue micro light emitting diodes arranged in sequence on a substrate.

[0008] Preferably, horizontally adjacent red, green, and blue LEDs constitute a pixel.

[0009] Preferably, each micro LED in the block includes a pn diode with its electrodes located on the left and right sides, respectively.

[0010] Preferably, each micro LED in the block includes a pn diode with electrodes located on the upper and lower sides, respectively.

[0011] Preferably, each block of micro-light-emitting diodes includes a red micro-light-emitting diode column, a green micro-light-emitting diode column, and a blue micro-light-emitting diode column arranged sequentially on the substrate.

[0012] Preferably, a pixel is formed by three vertically adjacent red, green, and blue LEDs.

[0013] According to another embodiment, a single driver drives two adjacent blocks.

[0014] The data terminals of the first column of the driver are electrically connected to the data lines of the first block; the data terminals of the second column of the driver are electrically connected to the data lines of the second block; and the common terminals of the driver are electrically connected to and share the common lines of the first block and the second block.

[0015] By means of the above technical solution, the present invention has at least the following advantages: the micro light-emitting diode display panel of the present invention can effectively prevent voltage drop effect and enhance display quality. Attached Figure Description

[0016] Figure 1A This shows a top view of a micro-light-emitting diode display panel according to a first embodiment of the present invention.

[0017] Figure 1B show Figure 1A The circuit diagram of the block, and the frame buffer (of the timing controller), are used to store the pixel data of the micro LED display panel.

[0018] Figure 1C and Figure 1D Showing a top view of a micro LED.

[0019] Figure 2A Not used Figures 1A-1B A top view of the micro-light-emitting diode display panel featured in the embodiment.

[0020] Figure 2B show Figure 2A The circuit diagram of the block, and the frame buffer (of the timing controller), are used to store the pixel data of the micro LED display panel.

[0021] Figure 3A A top view of a micro light emitting diode display panel of a second embodiment of the present application is shown.

[0022] Figure 3B A circuit diagram of a block of the micro light emitting diode display panel is shown. Figure 3A A frame buffer is used to store pixel data of the micro light emitting diode display panel.

[0023] Figure 4A A top view of a micro light emitting diode display panel of a third embodiment of the present application is shown.

[0024] Figure 4B A circuit diagram of a block of the micro light emitting diode display panel is shown. Figure 4A A frame buffer is used to store pixel data of the micro light emitting diode display panel.

[0025] Figure 5A A top view of two drivers driving two blocks is shown.

[0026] Figure 5B A top view of a single driver driving two blocks is shown.

[0027]

MAIN COMPONENT SYMBOL EXPLANATION

[0028] 100: micro light emitting diode display panel 200: micro light emitting diode display panel

[0029] 300: micro light emitting diode display panel 400: micro light emitting diode display panel

[0030] 101: display area 102: block

[0031] 11: driver 111A: data terminal of top column

[0032] 111B: data terminal of bottom column 112: common terminal

[0033] 112A: common terminal of top column 112B: common terminal of bottom column

[0034] 12: timing controller 121: frame buffer

[0035] 13: micro light emitting diode 13R: red micro light emitting diode

[0036] 13G: green micro light emitting diode 13B: blue micro light emitting diode

[0037] COM: common line DATA: data line

[0038] P: pixel DETAILED DESCRIPTION

[0039] Figure 1AThis image shows a top view of a micro-light-emitting diode (LED) display panel 100 according to a first embodiment of the present invention. The display area 101 of the micro-LED display panel 100 is divided into multiple blocks 102 (or display units), each block 102 being driven by a corresponding driver 11 (e.g., integrated circuitry). The micro-LED display panel 100 may include at least one timing controller 12 for controlling the drivers 11. In this embodiment, the display area 101 is divided into 1728 blocks 102 (each with 1728 drivers 11), arranged in 192 rows and 9 columns.

[0040] Figure 1B show Figure 1A The circuit diagram of block 102, along with the framebuffer 121 (of the timing controller 12), is used to store pixel data of the micro-LED display panel 100. Block 102 may contain multiple micro-LEDs 13, including rows of red micro-LEDs 13R, green micro-LEDs 13G, and blue micro-LEDs 13B sequentially arranged on a substrate (e.g., a glass substrate). According to one feature of this embodiment, the anodes of micro-LEDs 13 in the same column are connected to corresponding data lines (DATA), and the cathodes of micro-LEDs 13 in the same row are connected to corresponding common lines (COM) (which are connected to the driver 11 and then to the timing controller 102 via other blocks 102). Horizontally adjacent red micro-LEDs 13R, green micro-LEDs 13G, and blue micro-LEDs 13B constitute a pixel. In this embodiment, the resolution of the micro-LED display panel 100 is 1920RGB(H) x 1080(V), and the resolution of the block 102 is 30(H) x 120(V). Therefore, the data terminals of the corresponding driver 11 of each block 102 are electrically connected to data lines DATA 1 to DATA 120, and the common terminals are electrically connected to common lines COM 1 to COM 30. It is worth noting that the vertical resolution (i.e., 120) and the number of common terminals (i.e., 30) are multiples of 3. The micro-LED 13 in this embodiment can be a pn diode, and its electrodes (i.e., p electrode (or anode) and n electrode (or cathode)) can be located on the left and right sides, such as... Figure 1C The top view shown. In another embodiment, the electrodes of the micro-LED 13 may be located on the upper and lower sides, such as... Figure 1D The top view shown.

[0041] Figure 2A Not used Figures 1A-1B A top view of the micro-light-emitting diode display panel 200 as described in the embodiment. The display area 101 is divided into 576 blocks 102 (and 576 drivers 11), arranged in 32 rows and 18 columns.

[0042] Figure 2B show Figure 2A The circuit diagram of block 102, and the frame buffer 121 (of the timing controller 12), are used to store pixel data of the micro-LED display panel 200. Block 102 may contain multiple micro-LEDs 13, including rows of red micro-LEDs 13R, green micro-LEDs 13G, and blue micro-LEDs 13B arranged sequentially. Figure 2B As shown, the anodes of micro-LEDs 13 in the same row are connected to the corresponding data lines (DATA), and the cathodes of micro-LEDs 13 in the same column are connected to the corresponding common lines (COM). Horizontally adjacent red micro-LEDs 13R, green micro-LEDs 13G, and blue micro-LEDs 13B constitute one pixel. The resolution of the micro-LED display panel 200 is 1920RGB(H) x 1080(V), and the resolution of block 102 is 60(H) x 60(V). Therefore, the data terminals of the corresponding drivers 11 of each block 102 are electrically connected to data lines DATA 1 to DATA 180, and the common terminals are electrically connected to common lines COM 1 to COM 60.

[0043] It is worth noting that each row has 18 drives 11, therefore Figures 2A-2B The micro-LED display panel 200 experiences a voltage drop effect due to the impedance and parasitic capacitance of the metal wires. Conversely, Figures 1A-1B Each row of the micro-LED display panel 100 has only 9 drivers 11, which can effectively avoid voltage drop effects and increase the individual scan period while maintaining the frame rate.

[0044] Figure 3A This shows a top view of a micro-light-emitting diode display panel 300 according to a second embodiment of the present invention. In this embodiment, the display area 101 is divided into 576 blocks 102 (each with 576 drivers 11), arranged in 96 rows and 6 columns.

[0045] Figure 3B show Figure 3AThe circuit diagram of block 102, along with the frame buffer 121 (of the timing controller 12), is used to store pixel data of the micro-LED display panel 300. Block 102 may contain multiple micro-LEDs 13, including rows of red micro-LEDs 13R, green micro-LEDs 13G, and blue micro-LEDs 13B arranged sequentially. According to one feature of this embodiment, the anodes of micro-LEDs 13 in the same column are connected to the corresponding data line (DATA), and the cathodes of micro-LEDs 13 in the same row are connected to the corresponding common line (COM). Horizontally adjacent red micro-LEDs 13R, green micro-LEDs 13G, and blue micro-LEDs 13B constitute one pixel. In this embodiment, the resolution of the micro-LED display panel 300 is 1920RGB(H) x 1080(V), and the resolution of block 102 is 60(H) x 180(V). Therefore, the data terminals of the corresponding driver 11 in each block 102 are electrically connected to data lines DATA 1 to DATA 180, and the common terminals are electrically connected to common lines COM 1 to COM 60. Because... Figures 3A-3B Each row of the micro-LED display panel 300 has only 11 drivers 11, which can effectively avoid voltage drop effects and increase the individual scan period.

[0046] Figure 4A This shows a top view of a micro-light-emitting diode display panel 400 according to a third embodiment of the present invention. In this embodiment, the display area 101 is divided into 576 blocks 102 (each with 576 drivers 11), arranged in 48 rows and 12 columns.

[0047] Figure 4B show Figure 4A The circuit diagram of block 102 is shown below. Block 102 may include multiple micro-light-emitting diodes (LEDs) 13, including columns of red LEDs 13R, green LEDs 13G, and blue LEDs 13B arranged sequentially. According to one feature of this embodiment, the anodes of LEDs 13 in the same column are connected to the corresponding data lines (DATA), and the cathodes of LEDs 13 in the same row are connected to the corresponding common lines (COM). Vertically adjacent red LEDs 13R, green LEDs 13G, and blue LEDs 13B constitute one pixel. In this embodiment, the resolution of the LED display panel 400 is 1920 (H) x 1080 RGB (V), and the resolution of block 102 is 40 (H) x 270 (V). Therefore, the data terminals of the corresponding drivers 11 of each block 102 are electrically connected to data lines DATA 1 to DATA 270, and the common terminals are electrically connected to common lines COM 1 to COM 40. Figures 4A-4BEach row of the micro-LED display panel 400 has only 12 drivers 11, thus the voltage drop effect can be effectively avoided, and the individual scanning period can be increased.

[0048] Figure 5A A top view of a micro-LED display panel 400 having two drivers 11 driving two blocks 102 (e.g., block A and block B) is shown. For each block 102, the data terminals 111A of the top column and the data terminals 111B of the bottom column are electrically connected to the data lines of the corresponding block 102, and the common terminals 112A of the top column and the common terminals 112B of the bottom column are electrically connected to the common lines of the corresponding block 102.

[0049] Figure 5B A top view of a micro-LED display panel 400 having a single driver 11 driving two (adjacent) blocks 102 (e.g., block A and block B) is shown. For each block 102, the data terminals 111A of the top (or first) column of the driver 11 are electrically connected to the data lines of the top (or first) block 102 (e.g., block A); the data terminals 111B of the bottom (or second) column of the driver 11 are electrically connected to the data lines of the bottom (or second) block 102 (e.g., block B); and the common terminal 112 of the driver 11 is electrically connected to and shared by the common lines of the two blocks 102 (e.g., block A and block B). Compared with the above-mentioned Figure 5A , the micro-LED display panel using the sharing mechanism needs fewer drivers 11 and common terminals 112, thus the voltage drop effect can be effectively avoided. Figure 5B

[0050] The above description is only the preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed as the above-mentioned preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned disclosed technical contents to make equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification of the above-mentioned embodiments according to the technical essence of the present application are still within the scope of the technical solution of the present application.​

Claims

1. A micro light emitting diode display panel, characterized in that, The display region is divided into a plurality of blocks. A plurality of drivers respectively drive the micro light emitting diodes in the corresponding blocks; and At least one timing controller is used to control the plurality of drivers. Wherein the anodes of the micro light emitting diodes in the same column in each block are connected to the corresponding data lines, the cathodes of the micro light emitting diodes in the same row are connected to the corresponding common lines, and the plurality of drivers in the same row are connected together in series through the common lines and then connected to the corresponding timing controller, thereby reducing the impedance and parasitic capacitance of the metal wires in the same row to avoid the voltage drop effect. The micro light emitting diodes in each block include a row of red micro light emitting diodes, a row of green micro light emitting diodes, and a row of blue micro light emitting diodes arranged in sequence on the substrate.

2. The micro-LED display panel according to claim 1, wherein, Horizontally adjacent red micro light emitting diodes, green micro light emitting diodes, and blue micro light emitting diodes constitute a pixel.

3. The micro-LED display panel according to claim 2, wherein, Each micro light emitting diode in the block includes a p-n diode, and the electrodes thereof are respectively arranged on the left and right sides.

4. The micro-LED display panel according to claim 1, wherein, Each micro light emitting diode in the block includes a p-n diode, and the electrodes thereof are respectively arranged on the upper and lower sides.

5. The micro-LED display panel according to claim 1, wherein, The micro light emitting diodes in each block include a column of red micro light emitting diodes, a column of green micro light emitting diodes, and a column of blue micro light emitting diodes arranged in sequence on the substrate.

6. The micro-LED display panel according to claim 1, wherein, Vertically adjacent red micro light emitting diodes, green micro light emitting diodes, and blue micro light emitting diodes constitute a pixel.

7. The micro-LED display panel according to claim 6, wherein, ​

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