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A display panel and its manufacturing method

A technology for display panels and touch panels, which is used in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc., can solve the problems of reduced effective voltage, low pixel luminous brightness, and reduced pixel luminous brightness, etc. Effective length, increased brightness, increased difference effect

Active Publication Date: 2020-11-24
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The voltage drop of the VSS voltage and the voltage drop of the VDD voltage will reduce the effective voltage across the pixel, resulting in a decrease in the luminance of the pixel. When the absolute value of the voltage drop of the VSS voltage is greater, the luminance of the pixel will be smaller.

Method used

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  • A display panel and its manufacturing method
  • A display panel and its manufacturing method
  • A display panel and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment Construction

[0064] The invention provides a display panel, such as Figure 5 As shown, the display panel includes: a COF (Chip On Flex, or, Chip On Film, often called chip-on-film) substrate 21, a first FPC substrate 22, a second FPC substrate 26, an array substrate 3, and an array substrate located on the array substrate 3. The array substrate 3 includes a PI (polyimide) layer and a plurality of pixel circuits on the PI layer 1 .

[0065] The first FPC substrate 22 is fixed on the first side of the COF substrate 21, the second side of the COF substrate 21 is fixed on the PI layer 1, the second FPC substrate 26 is fixed on the edge of the touch panel 18, the second FPC substrate 26 and the COF The substrate 21 is located on opposite sides of the display panel.

[0066] The first FPC substrate 22 is provided with a power management integrated circuit 25 (Power Management Integrated Circuit, PMIC), the second FPC substrate 26 is provided with a touch integrated circuit 28 (Touch Integrated...

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PUM

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Abstract

The present invention provides a display panel and a preparation method thereof. The display panel includes: a COF substrate, a first FPC substrate, a second FPC substrate, an array substrate and a touch panel, and the array substrate includes a PI layer and a plurality of pixels on the PI layer. Circuit; the first FPC substrate is fixed on the first side of the COF substrate, the second side of the COF substrate is fixed on the edge of the PI layer, the second FPC substrate is fixed on the edge of the touch panel, and the second FPC substrate and the COF substrate are located on the display panel On the opposite sides; the first FPC substrate is provided with a power management integrated circuit, the second FPC substrate is provided with a touch integrated circuit, and the COF substrate is also provided with a driver integrated circuit; each pixel circuit contains a light emitting The diode and the pixel circuit are used to receive the VDD voltage output by the power management integrated circuit or the driving integrated circuit and the VSS voltage output by the touch integrated circuit to control the light emitting diode to emit light. The invention can improve the brightness of the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel and a preparation method thereof. Background technique [0002] With the great success of Samsung S8 / Note8 flexible OLED display mobile phone series, especially Iphone X also adopts OLED display, which shows that flexible display is a very competitive display technology in the future. However, because the internal power supply wiring of the OLED display inevitably introduces resistance, when there is current on the power supply wiring, a voltage drop will occur. These currents are used to drive the TFT (Thin Film Transistor, thin film transistor) inside the display to emit light. The voltage drop generated on the power supply line will cause the current of the TFT inside the display screen to change, so that the brightness of the display screen will also be uneven. [0003] The power wiring of a general OLED display is as follows: figure 1 as shown, figure 2 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L21/77
CPCH10K59/40H10K59/131H10K59/1201
Inventor 王海
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD