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Display panel and writing method of display panel

A technology for display panels and driving circuits, applied in static indicators, instruments, etc., can solve problems such as gamma data changes, and achieve the effect of eliminating brightness deviation and avoiding difficult control.

Pending Publication Date: 2022-05-03
CHONGQING HKC OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present application provides a display panel and a writing method of the display panel. The display panel can solve the problem of gamma data change on the fixture board when eliminating brightness deviation.

Method used

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  • Display panel and writing method of display panel
  • Display panel and writing method of display panel
  • Display panel and writing method of display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] See figure 1 , is a schematic structural diagram of the display panel according to Embodiment 1 of the present application. The display panel of the present application includes a power management circuit 1 , and the power management circuit 1 includes a driving circuit 11 , a main control circuit 13 and a control circuit 12 . Wherein, the main control circuit 13 is connected to the driving circuit 11 , and the control circuit 12 is connected to the driving circuit 11 .

[0027] The driving circuit 11 includes a non-volatile memory 21 and a register 22 . The nonvolatile memory 21 stores the first gamma voltage value of the display panel. The control circuit 12 controls the driving circuit 11 to store the second gamma voltage value acquired by the main control circuit 3 into the register 22 when the driving circuit 11 is in the first state.

[0028] Further, the control circuit 12 controls the drive circuit 11 to receive a low-level signal, so that the non-volatile me...

Embodiment 2

[0036] See Figure 4 , which is a schematic structural diagram of the display panel in Embodiment 2 of the present application, and figure 1 Compared with the illustrated embodiment, the difference is that this embodiment also includes a code memory 2 and a logic connector 3 connecting the code memory with the power management circuit 1 .

[0037] Wherein, the code memory 2 includes a flash memory unit 20 , and the flash memory unit 20 is connected to the main control circuit 13 . Specifically, the flash memory unit 20 is connected to the main control circuit 13 through a logic connector 3 . The main control circuit 13 obtains the second gamma voltage value from the flash memory unit 20 and writes the second gamma voltage value into the register 22 .

[0038] The logic connector 3 is connected with the code memory 2 and the power management circuit 1 . In a specific embodiment, the code memory 2 is provided with a connector M, the power management circuit 1 is provided with...

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Abstract

The invention provides a display panel and a write-in method of the display panel, and the display panel comprises a power management circuit, the power management circuit comprises a driving circuit and a main control circuit, and the main control circuit is connected with the driving circuit; the power management circuit further comprises a control circuit, the driving circuit comprises a nonvolatile memory and a buffer, and the nonvolatile memory stores a first gamma voltage value of the display panel; and the control circuit is connected with the driving circuit, and when the driving circuit is controlled to be in the first state, the second gamma voltage value acquired by the main control unit is stored in the buffer so as to protect the first gamma voltage value from being rewritten. When the display panel is used for eliminating brightness deviation, the problem of gamma data change on the jig plate can be solved. It is guaranteed that the gamma value on the jig plate is not changed when brightness deviation is eliminated every time, and the situation that a production line jig is difficult to control is effectively avoided.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a display panel and a writing method for the display panel. Background technique [0002] In general, because the manufacturing process of each piece of glass cannot be completely consistent, the phenomenon of luminance deviation (mura) will not be completely consistent. Therefore, auto-gamma and demura compensation data must be shipped along with the glass side, so that panel manufacturers can eliminate brightness deviation, that is, demura compensation, and eliminate dark clusters caused by factors such as uneven backlight and uneven charging. . Demura compensation is a method of compensating for the brightness deviation (mura) that occurs due to panel mechanism / process, etc., so that the picture becomes more uniform. [0003] When doing demura compensation, it is necessary to put the demura compensation data and auto-gamma data of each piece of glass on the produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G2310/0291
Inventor 唐莉郑浩旋
Owner CHONGQING HKC OPTOELECTRONICS TECH CO LTD
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