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Organic light-emitting diode display panel and production method thereof

A technology for light-emitting diodes and display panels, which is applied in the fields of organic semiconductor devices, semiconductor/solid-state device manufacturing, electrical components, etc., and can solve the problems of uneven brightness, unavailability, and uniform driving voltage.

Active Publication Date: 2013-09-18
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, researchers have found that large-area panels often cannot obtain a uniform driving voltage, resulting in uneven brightness, forming a major bottleneck in the development of OLED display technology

Method used

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  • Organic light-emitting diode display panel and production method thereof
  • Organic light-emitting diode display panel and production method thereof
  • Organic light-emitting diode display panel and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0046] Please refer to Figure 1~2 , figure 1 A top view of the organic light emitting diode display panel 100 of the first embodiment is shown, figure 2 draw figure 1 A cross-sectional view of the OLED display panel 100 along the section line 2-2. The OLED display panel 100 includes a substrate 110 , a thin film transistor 120 , a flat layer 130 , an auxiliary electrode layer 140 , a reflective electrode layer 150 , a pixel definition layer 160 , an organic light emitting layer 170 and a transparent electrode layer 180 . In this embodiment, the OLED display panel 100 is a top emission type. Such as figure 2 As shown, the material of the substrate 110 is, for example, glass or silicon (Si). The stack structure of the organic light emitting diode display panel 100 is sequentially formed on the substrate 110 through various procedures of the semiconductor process.

[0047] Such as figure 2 As shown, the thin film transistor 120 is disposed on the substrate 110 to provi...

no. 2 example

[0062] Please refer to Figure 8-9 , Figure 8 A top view of the organic light emitting diode display panel 200 of the second embodiment is shown, Figure 9 draw Figure 8 A schematic diagram of the OLED display panel 200 along the section line 9-9. The difference between the OLED display panel 200 of this embodiment and the OLED display panel 100 of the first embodiment lies in the design of the groove 230b, and the rest of the similarities will not be described again.

[0063] Such as Figure 9 As shown, the planar layer 230 has several cavities 230e. The plurality of concave holes 230e are disposed in the groove 230b. That is to say, the bottom 230c of the groove 230b is not flat but uneven. Since the bottom 230c of the groove 230b is uneven, the organic light-emitting layer 270 is discontinuously laid on the auxiliary electrode layer 240, so the transparent electrode layer 280 can still contact the auxiliary electrode layer 240, thereby reducing the impedance between...

no. 3 example

[0068] Please refer to Figure 12 , which shows Figure 13 A cross-sectional view of the OLED display panel 300 . The difference between the OLED display panel 300 of this embodiment and the OLED display panel 200 of the second embodiment lies in the design of the groove 330b, and the rest of the similarities will not be described again.

[0069] Such as Figure 12 As shown, the groove 330 b runs through the planar layer 330 and a portion of the dielectric layer 324 . And the metal layer 322 used to make the thin film transistor 320 remains at the bottom 330c of the groove 330b, and several cavities 330e are formed in the groove 330b. Steeper slopes can be created with this design. Since the bottom 330c of the groove 330b is uneven, the organic light-emitting layer 370 is discontinuously laid on the auxiliary electrode layer 340, so the transparent electrode layer 380 can still contact the auxiliary electrode layer 340, thereby reducing the impedance between the two. .

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Abstract

The invention discloses an organic light-emitting diode display panel and a production method thereof. The organic light-emitting diode display panel comprises a flat layer, an auxiliary electrode layer, a reflection electrode layer, a pixel definition layer, an organic light-emitting layer and a transparent electrode layer. The flat layer is provided with a groove; the auxiliary electrode layer is arranged inside the groove; the organic light-emitting layer extends to the groove; and a part of the organic light-emitting layer inside the groove is arranged in a disconnected manner on the auxiliary electrode layer. The transparent electrode layer is arranged on the organic light-emitting layer. The transparent electrode layer extends to the groove and is electrically connected with the auxiliary electrode layer.

Description

technical field [0001] The present invention relates to a display panel and a manufacturing method thereof, and in particular to an organic light emitting diode display panel and a manufacturing method thereof. Background technique [0002] With the development of display technology, various display technologies are constantly being introduced. Among them, organic light-emitting diodes (OLEDs) have the advantages of thin thickness, self-luminescence, high chroma and bendability, etc., making organic light-emitting diodes Known as the tomorrow's star of display technology. [0003] In an organic light emitting diode, electrons and holes are injected into the organic light emitting layer, and the electrons and holes are combined in the organic light emitting layer to excite light. OLED display panels arrange pixels in a matrix. However, researchers have found that large-area panels often cannot obtain a uniform driving voltage, resulting in uneven brightness, forming a major...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L21/77
CPCH10K2102/3026H10K59/80522
Inventor 陈韻升黄浩榕
Owner INNOCOM TECH SHENZHEN
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