Display substrate and manufacturing method thereof and organic light emitting diode display device
A technology for display substrates and manufacturing methods, which is applied in semiconductor/solid-state device manufacturing, electrical components, electrical solid-state devices, etc., and can solve problems such as IR-Drop effects, impact on consumer viewing experience, and differences in display effects.
Active Publication Date: 2019-08-09
BOE TECH GRP CO LTD
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Problems solved by technology
In order to ensure the transmittance of the cathode located in the pixel area, the cathode in the related art is generally not formed very thick, and the cathode usually uses a current conduction path from the periphery to the center, which makes the resistance of the cathode itself relatively larger. And the resistance will have a greater impact on IR-Drop as the display area increases
Based on the difference in voltage and current in different regions, the display brightness of each region is different, and the corresponding display effect has obvious differences, which affects the viewing experience of consumers.
Method used
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[0106] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is illustrative only, and in no way restricts the disclosure, its application or uses. The present disclosure can be implemented in many different forms and is not limited to the embodiments described here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values set forth in these embodiments should be interpreted as illustrative only and not as limiting, unless specifically stated otherwise.
[0107] "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distin...
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The invention relates to a display substrate and a manufacturing method thereof and an organic light emitting diode display device. The display substrate includes an array substrate, bump structures,a first metal layer, a first flattening layer, multiple functional layers and a cathode layer. The array substrate includes a display area, and the display area includes a pixel area and a non-pixel area around the pixel area. The bump structures are located on the array substrate along a first direction and located in the non-pixel area, and the first direction is the light-out direction of the display substrate or the opposite direction of the light-out direction. The first metal layer is located on the bump structures along the first direction, and is conductively connected with a working voltage end. The first flattening layer is located on the array substrate along the first direction. The functional layers and the cathode layer are arranged on the first flattening layer in turn alongthe first direction. The cathode layer is electrically connected with the first metal layer through via holes.
Description
technical field [0001] The present disclosure relates to a display substrate, a manufacturing method thereof, and an organic light emitting diode display device. Background technique [0002] Organic Electro Luminescent Display (OLED) has gradually become the mainstream in the display field and can be widely used due to its low power consumption, high color saturation, wide viewing angle, thin thickness, and flexibility. For end products such as smartphones, tablets, and TVs. Among them, flexible OLED has gradually become the mainstream product in OLED because it can meet the needs of various special structures. [0003] IR drop (IR-drop) refers to the phenomenon that the voltage drops or rises in the power supply and ground network in the circuit. With the development of flexible technology, the increase of display size, the improvement of display resolution, and the reduction of line width have a significant impact on IR-Drop. In order to ensure the transmittance of the...
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IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/1315H10K59/131H10K50/824H10K59/1201H10K71/00
Inventor 田宏伟牛亚男李栋刘明刘政
Owner BOE TECH GRP CO LTD