CN219085245U - OLED display panel and display device - Google Patents

Abstract

The utility model provides an OLED display panel, comprising: an upper substrate; a lower substrate; a color filter layer and a black matrix layer are arranged between the upper substrate and the lower substrate; the black matrix layer is a liquid crystal box; the color filter layer comprises a filter unit; the gap between the liquid crystal cell and the filter unit is aligned. The black matrix is filled with a liquid crystal box, so that the transmittance of the OLED display screen is improved or the reflectivity of the screen to outside light is reduced by controlling whether liquid crystal deflects or not, and the power consumption is reduced.

Description

OLED display panel and display device

Technical Field

The utility model relates to the technical field of display, in particular to an OLED display panel and a display device.

Background

With the development of technology, mobile electronic devices such as smart phones and computers are increasingly used, and a display panel is one of the main components of these electronic devices. Such as liquid crystal display devices and organic light emitting diode display devices, have been increasingly important.

The organic light emitting diode is a self-luminous display device, has characteristics of self-luminescence, simple structure, ultra-thin, fast response speed, wide viewing angle, low power consumption, and realization of flexible display, and thus is recognized as a next generation mainstream display.

Because the electrode of the OLED device has a strong reflection effect, metal wires are distributed in the wiring area between the OLED devices, and light rays are easily reflected, the reflectivity of the display panel is high, and the display effect is affected.

In order to reduce the reflectivity of the display panel and achieve better contrast and integral black effects, a polarizer is typically added over the OLED device. However, the polarizer itself has lower light transmittance, which results in increased power consumption of the OLED and shortened device lifetime. Therefore, how to reduce the power consumption of the device while achieving low reflectivity is a problem to be solved in the art.

The research and development of new OLED display products, the removal of the polarizer is an important research direction, and the research scheme is to make a color filter structure process on the packaging layer to replace the polarizer. The color purity of the color filter structure and the choice of the black matrix material are also the urgent problems to be solved.

Disclosure of Invention

Based on the above problems, the utility model provides an OLED display panel and a display device, which aim to solve the technical problems of how to improve the transmittance of an OLED display screen and reduce the reflectivity of the screen to external light.

An OLED display panel comprising:

an upper substrate;

a lower substrate;

a color filter layer and a black matrix layer are arranged between the upper substrate and the lower substrate;

the black matrix layer is a liquid crystal box;

the color filter layer comprises a filter unit;

the gap between the liquid crystal cell and the filter unit is aligned.

Further, the black matrix layer and the color filter layer are located on the same layer.

Further, the color filter layer is located on the lower surface of the upper substrate, and the black matrix layer is located on the upper surface of the upper substrate.

Further, the black matrix layer is located on the upper surface of the color filter layer.

Further, the black matrix layer is located on the lower surface of the color filter layer.

Further, a packaging layer is arranged between the lower substrate and the upper substrate; the color filter layer is arranged on the upper surface of the packaging layer.

Further, a pixel definition layer is arranged on the lower substrate, and the pixel units are arranged in grooves of the pixel definition layer; the projection width of the filter unit on the lower substrate is larger than that of the pixel unit on the lower substrate.

Further, a thin film transistor layer is disposed between the lower substrate and the pixel defining layer.

An OLED display device is characterized by comprising the OLED display panel.

The beneficial technical effects of the utility model are as follows: the black matrix is filled with a liquid crystal box, so that the transmittance of the OLED display screen is improved or the reflectivity of the screen to outside light is reduced by controlling whether liquid crystal deflects or not, and the power consumption is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an OLED display panel according to the present utility model.

Wherein, the liquid crystal display device comprises a liquid crystal display device,

1-an upper substrate;

2-a lower substrate;

3-a color filter layer;

a 4-black matrix layer;

5-packaging layer;

a 6-pixel unit;

7-a pixel definition layer;

an 8-thin film transistor layer;

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.

Referring to fig. 1, the present utility model provides an OLED display panel including:

an upper substrate (1);

a lower substrate (2);

a color filter layer (3) and a black matrix layer (4) are arranged between the upper substrate (1) and the lower substrate (2);

the black matrix layer (4) is a liquid crystal box;

the color filter layer (3) comprises a filter unit;

the gap between the liquid crystal cell and the filter unit is aligned.

Further, the black matrix layer (4) and the color filter layer are located on the same layer.

Further, the color filter layer (3) is located on the lower surface of the upper substrate (1), and the black matrix layer (4) is located on the upper surface of the upper substrate (1).

Further, the black matrix layer (4) is located on the upper surface of the color filter layer (3).

Further, the black matrix layer (4) is located on the lower surface of the color filter layer (3).

The color filter layer comprises three filter units of RGB, and the liquid crystal box and the filter units are distributed in a staggered way and aligned with the gap between the two filter units.

The black matrix layer and the color filter layer may be in the same layer, and the liquid crystal cell is directly filled in the gap of the color filter unit.

The black matrix layer and the color filter layer may not be the same layer.

Further, a packaging layer (5) is arranged between the lower substrate (2) and the upper substrate (1); the color filter layer (3) is arranged on the upper surface of the packaging layer (5).

Further, a pixel definition layer (7) PDL is arranged on the lower substrate (2), and the pixel units (6) are arranged in grooves of the pixel definition layer;

the projection width of the filter unit on the lower substrate (2) is larger than the projection width of the corresponding pixel unit on the lower substrate (2).

As a preferred implementation mode, the projection width of the light filtering unit is larger than that of the pixel unit, so that all light emitted by the pixel unit can be emitted from the device, the maximum light extraction amount is achieved, the light extraction efficiency is improved, and the power consumption of the device is reduced.

Of course, the projection width of the filtering unit may be smaller than or equal to the projection width of the pixel unit, so as to achieve the purpose of adjusting the quality of the screen, such as the bias of the dominant visual character. Specifically, the pixel unit and the filter unit are arranged up and down oppositely.

Further, a thin film transistor layer (8), namely, a TFT is provided between the lower substrate (2) and the pixel defining layer (7).

An OLED display device is characterized by comprising the OLED display panel.

When the black matrix layer is not a liquid crystal cell, external light passes through the upper substrate (1) and is reflected by meeting with the cathode of the light emitting unit, thereby interfering with the display of the screen.

When the black matrix layer is filled with the liquid crystal box, the voltage of the liquid crystal box is controlled to be set to be (+/-) (2V-8V). In the lighting mode, no voltage or the same voltage is applied to the two ends of the liquid crystal box, so that the voltage difference between the two ends of the liquid crystal box is zero or less than a preset value, such as 0.1V, the liquid crystal molecules are not deflected, and external light cannot be reflected by meeting the liquid crystal box with the cathode of the light-emitting unit, so that the interference of external light on screen display can be blocked.

The projection width of the filter unit on the lower substrate may be greater than or less than or equal to the projection width of the corresponding pixel unit on the lower substrate.

When the projection width of the filter unit on the lower substrate is smaller than the projection width of the corresponding pixel unit on the lower substrate, the projection of the liquid crystal box exists right above the pixel unit, different voltages are applied to the two ends of the liquid crystal box, so that the voltage difference between the two ends of the liquid crystal box is larger than a preset value, such as 5V, liquid crystal molecules deflect, and light of the pixel unit can be emitted from the filter unit and also from a liquid crystal molecule gap. The light emitted from the cell gap of the liquid crystal molecules may supplement the light emitted from the filter unit. Therefore, the light-emitting problems such as large-viewing-angle color cast and the like of the OLED can be improved by adjusting and controlling the voltage of the liquid crystal.

The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.

Claims (8)

1. An OLED display panel, comprising:

an upper substrate;

a lower substrate;

a color filter layer and a black matrix layer are arranged between the upper substrate and the lower substrate;

the black matrix layer is a liquid crystal box;

the color filter layer comprises a filter unit;

a gap alignment between the liquid crystal cell and the filter unit;

the black matrix layer and the color filter layer are located on the same layer.

2. The OLED display panel of claim 1, wherein the color filter layer is disposed on a lower surface of the upper substrate, and the black matrix layer is disposed on an upper surface of the upper substrate.

3. The OLED display panel of claim 1, wherein said black matrix layer is located on an upper surface of said color filter layer.

4. The OLED display panel of claim 1, wherein said black matrix layer is located on a lower surface of said color filter layer.

5. The OLED display panel of claim 1, wherein an encapsulation layer is disposed between said lower substrate and said upper substrate; the color filter layer is arranged on the upper surface of the packaging layer.

6. The OLED display panel of claim 1, wherein a pixel defining layer is disposed on the lower substrate, and pixel cells are disposed in grooves of the pixel defining layer;

the projection width of the filter unit on the lower substrate is larger than that of the pixel unit on the lower substrate.

7. The OLED display panel of claim 6, wherein a thin film transistor layer is disposed between the lower substrate and the pixel defining layer.

8. An OLED display device comprising an OLED display panel as claimed in any one of claims 1 to 7.

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