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Color film substrate and preparation method thereof and display panel

A color filter substrate and display panel technology, which is applied in optics, instruments, electrical components, etc., can solve the problems of areas that cannot be displayed externally, scratches on metal electrodes 7, and black spots on display panels.

Active Publication Date: 2018-11-23
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, the existing color filter substrate includes a transparent substrate 1, a color filter 3, a dielectric layer 4, and a metal electrode 7; wherein, the color filter 3 includes a plurality of color filters arranged on the transparent substrate 1 3, and the black matrix 2 between two adjacent color filters 3; the dielectric layer 4 is arranged between the color filter 3 and the metal electrode 7, and is used to separate the color filter 3 from the metal electrode 7 separated from each other to avoid the metal electrode 7 from scratching the color filter 3; however, it should be noted that, usually, the dielectric layer 4 has a relatively large thickness, and the dielectric layer 4 of this structure will After filtering a small part of the light emitted by the light-emitting layer, the light will be transmitted to the surface of the color filter 3, thereby reducing the display brightness of the display panel made of the color filter substrate including the dielectric layer 4
[0003] Moreover, the inventors have also found that since the dielectric layer 4 is made of organic materials, when a whole layer of dielectric layer 4 is prepared on the surface of the color filter 3, some relatively large Large particles, these particles are very easy to scratch the metal electrode 7 subsequently arranged on its surface, thus causing a short circuit in the display panel made of the color filter substrate, causing black spots to appear in some areas of the display panel, that is, the part The area cannot be displayed to the outside, which reduces the display effect of the display panel; at the same time, these particles will release gas when subjected to high temperature, and these gases will continuously impact the inside of the display panel, causing the display panel to break, thereby reducing the display panel. Yield rate

Method used

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  • Color film substrate and preparation method thereof and display panel
  • Color film substrate and preparation method thereof and display panel
  • Color film substrate and preparation method thereof and display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 2 As shown, this embodiment provides a method for preparing a color filter substrate, including the following steps:

[0028] S0 , cleaning the substrate 1 to keep the substrate 1 clean.

[0029] S1. On the substrate 1, a pattern including a black matrix 2 is formed through a patterning process.

[0030] Specifically, first, a layer of black matrix 2 material is coated on the substrate 1 after step S0 ; then, the layer of black matrix 2 material is etched to form a patterned black matrix 2 . Of course, the process of forming the patterned black matrix 2 on the substrate 1 after the step S0 is not limited to the above-mentioned one, and no limitation is made here.

[0031] Preferably, after the above steps are completed, a pattern of spacers 6 needs to be formed on part of the black matrix 2 . Specifically, firstly, a layer of spacer 6 is coated on the substrate 1 after step S1; then, the layer of spacer 6 is etched, so that the spacer 6 is formed in part...

Embodiment 2

[0043] like image 3 As shown, this embodiment provides a color filter substrate, which can be prepared by the preparation method provided in Embodiment 1.

[0044] Specifically, this embodiment provides a color filter substrate, including: a substrate 1, a black matrix 2 sequentially arranged on the substrate 1, an auxiliary electrode 5, and a color filter 3 located between the black matrix 2; wherein, the auxiliary The orthographic projection of the electrode 5 on the substrate 1 at least covers the orthographic projection of the black matrix 2 on the substrate 1 .

[0045] Further, in order to prevent the auxiliary electrode 5 made of metal from scratching the color filter 3, preferably, the orthographic projection of the auxiliary electrode 5 on the substrate 1 only covers the orthographic projection of the black matrix 2 on the substrate 1, so as to reduce the 5 and the contact area of ​​the color filter 3.

[0046] Wherein, the color filter substrate of this embodiment...

Embodiment 3

[0049]This embodiment provides a display panel, including the color filter substrate in Embodiment 2. When the display panel in this embodiment is an OLED panel, the auxiliary electrode 5 on the color filter substrate will be electrically connected to the cathode of the OLED device on the array substrate, thereby eliminating the need in the prior art to enable the color filter substrate to be connected to the The electrical connection of the array substrate also requires the preparation process of forming the metal electrode 7 (for example: indium selenium oxide) on the surface of the spacer 6, thereby saving the preparation time for preparing the color filter substrate and reducing the preparation cost.

[0050] Since the display panel in this embodiment includes the above-mentioned color filter substrate, its display effect is better.

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PUM

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Abstract

The invention provides a color film substrate and a preparation method thereof and a display panel, and belongs to the technical field of display. The preparation method of the color film substrate comprises the following steps that a graph including a black matrix is formed by a composition process on a substrate; an auxiliary electrode is formed; the orthographic projection of the auxiliary electrode on the substrate at least covers the orthographic projection of the black matrix on the substrate; and the graph including a color filter positioned among the black matrix is formed through thecomposition process on the substrate provided with the auxiliary electrode.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a color filter substrate, a preparation method thereof, and a display panel. Background technique [0002] like figure 1 As shown, the existing color filter substrate includes a transparent substrate 1, a color filter 3, a dielectric layer 4, and a metal electrode 7; wherein, the color filter 3 includes a plurality of color filters arranged on the transparent substrate 1 3, and the black matrix 2 between two adjacent color filters 3; the dielectric layer 4 is arranged between the color filter 3 and the metal electrode 7, and is used to separate the color filter 3 from the metal electrode 7 separated from each other to avoid the metal electrode 7 from scratching the color filter 3; however, it should be noted that, usually, the dielectric layer 4 has a relatively large thickness, and the dielectric layer 4 of this structure will After filtering a small part of the l...

Claims

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Application Information

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IPC IPC(8): H01L27/32
CPCH10K59/38G02F1/133514G02F1/133516G02F1/133509G02F1/13394G02F1/134318G02F1/133512G02F1/134336G02F1/13439
Inventor 宋振王国英
Owner BOE TECH GRP CO LTD