Display panel, preparation method thereof, and display apparatus

Patent metadata

Field	Value
Publication number	US-11860491-B2
Application number	US-202217950131-A
Country	US
Kind code	B2
Filing date	Sep 22, 2022
Priority date	Feb 26, 2021
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

A display panel includes a second substrate. The second substrate includes a second base substrate and a shielding layer, an array structure layer, an insulating layer and a reflective layer which are sequentially disposed on a second base substrate, the array structure layer includes gate lines; the shielding layer includes a plurality of groups of light shielding units sequentially arranged along a first direction, each group of the light shielding units includes a plurality of independent sub-light shielding units sequentially arranged along a second direction, the reflective layer includes a plurality of reflective units arranged in an array, the plurality of reflective units form a plurality of reflective rows and a plurality of reflective columns, a first space area is formed between adjacent reflective columns, and a second space area is formed between adjacent reflective rows forms.

First claim

The invention claimed is:

1. A display panel, comprising: a first substrate and a second substrate disposed oppositely, and a liquid crystal layer sandwiched between the first substrate and the second substrate, wherein
the second substrate comprises a second base substrate and a shielding layer, an array structure layer, an insulating layer and a reflective layer which are sequentially disposed on the second base substrate, wherein the array structure layer comprises a gate electrode layer, and the gate electrode layer comprises a plurality of gate lines;
the shielding layer comprises a plurality of groups of light shielding units sequentially arranged along a first direction, each group of the light shielding units comprises a plurality of independent sub-light shielding units sequentially arranged along a second direction, wherein
the first direction intersects with the second direction; the reflective layer comprises a plurality of reflective units arranged in an array along the first direction and the second direction, the plurality of reflective units form a plurality of reflective rows and a plurality of reflective columns, a space area between adjacent reflective columns forms a first space area, and a space area between adjacent reflective rows forms a second space area; and
the first space area comprises a first sub-region and a second sub-region, an orthographic projection of the first sub-region on the second base substrate is overlapped with an orthographic projection of a spacing area between two adjacent sub-light shielding units in each group on the second base substrate, and an orthographic projection of the second sub-region on the second base substrate is not overlapped with an orthographic projection of a space area between two adjacent sub-light shielding unit in each group on the second base substrate.

2. The display panel according to claim 1 , wherein an orthographic projection of at least one gate line on the second base substrate covers an orthographic projection of the first sub-region on the second base substrate, and an orthographic projection of the light shielding unit on the second base substrate covers an orthographic projection of the second sub-region on the second base substrate.

3. The display panel according to claim 1 , wherein a width of the first sub-region in the second direction is 2 μm to 4 μm.

4. The display panel according to claim 1 , wherein
each of the light shielding units comprises a first light shielding part and a second light shielding part, an orthographic projection of the first light shielding part on the second base substrate is not overlapped with an orthographic projection of the second space area on the second base substrate; and
an orthographic projection of the second light shielding part on the second base substrate is overlapped with the orthographic projection of the second space area on the second base substrate, and a width of the second light-shielding portion in the first direction is smaller than a width of the first light-shielding portion in the first direction.

5. The display panel according to claim 4 , wherein a width of the second light shielding part in the first direction is between 3 μm to 5 μm.

6. The display panel according to claim 4 , wherein a width of the first light shielding part in the first direction is between 5 μm to 8 μm.

7. The display panel according to claim 4 , wherein
the first light shielding part comprises a first edge and a second edge which are disposed oppositely to each other in the first direction,
the first space area comprises a third edge and a fourth edge which are disposed opposite to each other in the first direction,
a space between the first edge of the first light shielding part and the third edge of the corresponding first space area is 0.8 μm to 1.5 μm, and
a space between the second edge of the first light shielding part and the fourth edge of the corresponding first space area is 0.8 μm to 1.5 μm.

8. The display panel according to claim 1 , wherein
the array structure layer further comprises an active semiconductor layer and a source-drain electrode layer, wherein the source-drain electrode layer comprises a source electrode and a drain electrode, the insulating layer is provided with a first via, and the reflective unit is connected to the drain electrode through the first via;
the first substrate comprises a first base substrate and a black matrix layer and a color filter layer which are sequentially disposed on the first base substrate; and at least one of the first substrate and the second substrate further includes a spacer; and
the black matrix layer comprises at least one first black matrix and at least one second black matrix, an orthographic projection of the at least one first black matrix on the first base substrate covers an orthographic projection of the spacer on the first base substrate; an orthographic projection of the at least one second black matrix on the first base substrate covers an orthographic projection of the first via on the first base substrate.

9. The display panel according to claim 1 , wherein the first substrate further comprises a first polarizer disposed on a side of the first substrate away from the second substrate, and the first polarizer comprises a first quarter-wave plate, a second adhesive layer, a half-wave plate, a third adhesive layer, a first cellulose triacetate layer, a first poly vinyl alcohol layer, and a second cellulose triacetate layer which are sequentially arranged along a direction away from the second substrate, wherein
an absorption axis angle of the first poly vinyl alcohol layer is n°, a slow axis angle of the half-wave plate is ((n+21)%180)° to ((n+23)%180)°, a slow axis angle of the first quarter-wave plate is ((n+142)%180)° to ((n+144)%180)°, and n is between 0 and 180, wherein % 180 is a symbol for a modulo operator, which means that a result from an expression inside a parentheses before the symbol is divided by 180 and a remainder is returned.

10. The display panel according to claim 1 , wherein the second substrate further comprises a second polarizer disposed on a side of the second substrate away from the first substrate, and the second polarizer comprises a second quarter-wave plate, a fourth adhesive layer, a third cellulose triacetate layer, a second poly vinyl alcohol layer, and a fourth cellulose triacetate layer which are sequentially arranged along a direction away from the first substrate, wherein
an absorption axis angle of the second poly vinyl alcohol layer is ((n+89)%180)° to ((n+91)%180)°, and a slow axis angle of the second quarter-wave plate is ((n+139)%180)° to ((n+141)%180)°, wherein % 180 is a symbol for a modulo operator, which means that a result from an expression inside a parentheses before the symbol is divided by 180 and a remainder is returned.

11. The display panel according to claim 1 , further comprising a touch structure layer disposed on a side of the first substrate away from the second substrate; wherein
in a plane parallel to the display panel, the display panel comprises a touch control area and a binding area located at the second direction side of the touch control area,
the touch control area comprises N electrode areas and N lead areas,
the electrode area and the lead area both extend along the second direction,
the electrode area and the lead area are alternately arranged along the first direction,
each of the electrode areas comprises M touch electrodes arranged sequentially along the second direction,
each of the lead areas comprises M touch traces arranged sequentially along the first direction,
a first end of each of the touch traces is connected with one

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zhang Zhao
• Chen Yanqing
• Li Wei
• Qin Weida
• Chen Kai
• Wang Jiguo
• Yan Wei
• Zhang Xiaofeng
• Li Zeliang
• Zhang Jian
• Wang Zhen

Classifications

• G02F1/136209 Primary

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G02F1/1341

  Filling or closing of cells · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G02F1/133354

  Arrangements for aligning or assembling substrates · CPC title

• G02F1/133531

  characterised by the arrangement of polariser or analyser axes · CPC title