A kind of flexible display device and its manufacturing method
A technology of a flexible display device and a manufacturing method, which is applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc., can solve the problems of deformation limitation of flexible display substrates and reduction of deformation capacity of flexible display devices, and prevent TFT characteristics from changing or Fracture effect
Active Publication Date: 2017-10-17
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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Problems solved by technology
However, although the elastic material layer can protect the fragile structure, it also limits the deformation of the flexible display substrate, resulting in a reduction in the deformation ability of the flexible display device.
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[0025] In order to facilitate a further understanding of the structure, method and achieved effects of the present invention, preferred embodiments are described in detail below in conjunction with the accompanying drawings.
[0026] Such as Figure 1 to Figure 3 As shown, the manufacturing method of the flexible display device of the present invention includes the following steps:
[0027] Step 1: Fabricate a TFT layer on a flexible substrate, and divide the TFT layer into a pixel area and a pixel interval area, and the pixel interval area divides a plurality of rows and columns of pixel areas in the form of rows and columns. The pixel area is used to separate the pixel area into independent islands arranged in an array.
[0028] Step 2: Etching the pixel interval area of the TFT layer, etching away the inorganic layer and metal layer in the pixel interval area until the flexible substrate is etched; then filling the etched pixel interval area An organic planarization lay...
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The invention discloses a flexible display device and a manufacture method thereof. The flexible display device comprises a flexible substrate, a TFT (thin film transistor) layer arranged on the flexible substrate and a luminescent device arranged on the TFT layer, wherein the TFT layer comprises pixel areas and pixel spacer areas, each pixel area is partitioned into an array with multiple rows and multiple columns by each pixel spacer area, a first organic matter planarization layer is arranged in each pixel spacer area, each two adjacent pixel areas are electrically connected through a metal wire which spans each first organic matter planarization layer, the luminescent device comprises pixel units, projections of the pixel units, on the flexible substrate, overlap with projections of the pixel areas of the TFT layer, on the flexible substrate, and projections of areas among the pixel units, on the flexible substrate, overlap with projections of the pixel spacer areas of the TFT layer, on the flexible substrate. According to the flexible display device and the manufacture method thereof, the pixel spacer areas are filled with the organic matter planarization layers, and therefore when the flexible display device is bent, stress can be concentrated on a bending area of the flexible display device, and furthermore the risk that TFT characters are changed or the TFT layer fractures, caused by bending the pixel areas, is prevented from occurring.
Description
technical field [0001] The present invention relates to a flexible display device and a manufacturing method thereof, in particular to a flexible display device with low cost, large bending degree and not easy to break a thin film transistor and a manufacturing method thereof. Background technique [0002] At present, the structure of each layer of the flexible substrate of the flexible display is inorganic and metal, and the thickness of each layer is similar. Due to the uniform stress distribution during bending, the position of the TFT (Thin Film Transistor, thin film transistor) may be deformed due to the bending characteristics. cause deviation, or even breakage. [0003] In order to solve the above problems, in the prior art, flexible and easy-to-bend materials are often used to manufacture display structures in flexible display devices, such as oxide semiconductors (indium gallium zinc oxide, IGZO) or organic semiconductors (such as copper phthalocyanine , PcCu) etc....
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IPC IPC(8): H01L21/77H01L21/762H01L27/12
CPCH01L21/762H01L21/77H01L27/1214H01L27/1248
Inventor 党鹏乐张小宝张秀玉丁立薇姜海斌刘周英胡思明杨楠张婷婷朱晖
Owner CHENGDU VISTAR OPTEOLECTRONICS CO LTD