TWI398851B - Display apparatus and display module thereof - Google Patents

Description

Display device and display module thereof

The invention relates to a display device and a display module thereof.

With the advent of the digital age, the demand for display devices, such as liquid crystal display devices, has continued to grow, and it has gradually become an indispensable electronic product for everyday life.

The liquid crystal display device mainly includes a display module and a backlight module. The display mode is that the backlight module emits a light to the display module, and then the liquid crystal molecules in the display module are rotated or tilted according to different driving voltages. Due to the different rotation angles of the liquid crystal molecules, the brightness produced is different, which can cause different gradation changes of different pixels.

However, when the user views the liquid crystal display device side by side, a color shift problem occurs due to the shift caused by the viewing angle. In other words, the color seen by the user when viewing the liquid crystal display device sideways has deviated from the color of the original color. In addition, as image quality continues to increase, the user's resolution requirements for liquid crystal display devices continue to increase.

Therefore, how to provide a display device and a display module capable of compensating for chromatic aberration and improving resolution has become one of important topics.

In view of the above problems, an object of the present invention is to provide a display device and a display module thereof that can compensate for chromatic aberration and improve resolution.

To achieve the above objective, a display module according to the present invention includes a mode switching circuit and a display panel. The mode switching circuit outputs a high resolution mode signal or a color difference compensation mode signal, and the display panel receives the high resolution mode signal or the color difference compensation mode signal to output a display screen.

To achieve the above objective, a display device according to the present invention comprises a backlight module and a display module. The display module is adjacent to the backlight module and includes a mode switching circuit and a display panel. The mode switching circuit outputs a high resolution mode signal or a color difference compensation mode signal, and the display panel receives the high resolution mode signal or the color difference compensation mode signal to output a display screen.

As described above, the display device and the display module thereof according to the present invention output a high-resolution mode signal or a color difference compensation mode signal to the display panel through a mode switching circuit, and the display panel receives high resolution. After the mode signal or the chromatic aberration compensation mode signal, a display screen can be output, whereby the display device and the display module of the present invention can switch between the high resolution mode or the chromatic aberration compensation mode according to different needs of the user.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a display device and a display module thereof according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

Please refer to FIG. 1, which is a schematic diagram of a display device 1 in accordance with a preferred embodiment of the present invention. The display device 1 can be, for example, a liquid crystal display device, and includes a backlight module 2 and a display module 3.

The backlight module 2 can be, for example, a cold cathode lamp backlight module or a light emitting diode The body backlight module emits a light L and is incident on the display module 3.

The display module 3 is adjacent to the backlight module 2 and includes a mode switching circuit 4 and a display panel 5.

Therefore, when the mode switching circuit 4 receives a control signal C, it outputs a high-resolution mode signal Hd or a color difference compensation mode signal Lc, and the display panel 5 receives the high-resolution mode signal Hd or the color difference compensation mode signal Lc. After that, a display screen D can be output.

Please refer to FIG. 1 and FIG. 2A for explaining the operation mode of the display module 3 in the color difference compensation mode. FIG. 2A is an equivalent circuit diagram of the display panel 5 in the color difference compensation mode according to the embodiment. The display panel 5 may have a plurality of pixel units 51, each pixel unit 51 having a first pixel R, a second pixel G, and a third pixel B. The first pixel R, the second pixel G, and the third pixel B can be represented as a red pixel, a green pixel, and a blue pixel, respectively. It should be noted that the color coefficients indicated by the first pixel, the second pixel, and the third pixel are respectively non-limiting.

The first pixel R, the second pixel G, and the third pixel B may respectively have a plurality of first sub-pixels R1, a plurality of second sub-pixels G1, and a plurality of third sub-pixels B1. In this embodiment, the first pixel R, the second pixel G, and the third pixel B respectively have two first sub-pixels R1, two second sub-pixels G1, and two third sub-pictures. The prime B1 is described, but it is not limited.

Thereby, when the display panel 5 receives the color difference compensation mode signal Lc, the first pixel R, the second pixel G, and the third pixel B respectively have a dark area Da and a bright area Br. In other words, one of the first sub-pixels R1 of the first pixel R is a dark area Da with a lower grayscale value, and the other sub-pixel R1 Then, it is a bright area Br with a higher gray scale value. Similarly, the second sub-pixels G1 of the second pixel G and the third sub-pixels B1 of the third pixel B are also divided into a dark area Da and a bright area Br. Wherein, in terms of the gray scale value, it is related to the rotation angle of the liquid crystal molecules (not shown) in the display panel 5, that is, when the liquid crystal molecules are driven by different driving voltages, the liquid crystal molecules are rotated to different angles. Since the liquid crystal molecules rotate at different angles, the brightness is different, so they can be divided into different gray scale values according to various brightnesses. For example, the larger the gray scale value, the brighter the brightness.

Therefore, the output display screen D is a color difference compensation display screen by the value obtained by summing the gray scale values of the dark area Da and the bright area Br. Thereby, it can be used to compensate the color shift in the side view, so that the color difference compensates the color displayed on the display screen, and is closer to the color seen in the front view when viewed from the side.

Please refer to FIG. 1 and FIG. 2B for explaining the operation mode of the display module 3 in the high resolution mode. FIG. 2B is an equivalent circuit diagram of the display panel 5 in the high resolution mode of the embodiment.

When the display panel 5 receives the high-resolution mode signal Hd, the pixel units 51 and the sub-pixels R1, G1, and B1 can form a complex sub-pixel unit 511, and each of the sub-pixel units 511 has a first A sub-pixel R1, a second sub-pixel G1 and a third sub-pixel B1.

Therefore, when the display panel 5 receives the high-resolution mode signal Hd, the display screen D output by the sub-pixel unit 511 having more pixels than the pixel unit 51 is a high-resolution display screen. Thereby, the image quality of the display screen D of the display panel 5 can be improved.

In addition, please refer to FIG. 3A and FIG. 3B, wherein FIG. 3A is the actual Another variation of the display panel 5a of the embodiment is an equivalent circuit diagram in the color difference compensation mode, and FIG. 3B is an equivalent circuit diagram of the display panel 5a in the high resolution mode.

In the display panel 5a, each of the first pixel R, the second pixel G, and the third pixel B has more first sub-pixels R1, second sub-pixels G1, and third sub-pixels B1. In this embodiment, the first pixel R, the second pixel G, and the third pixel B respectively have four first sub-pixels R1, four second sub-pixels G1, and four third sub-pictures. The prime B1 is described, but it is not limited.

Therefore, as shown in FIG. 3A, when the display panel 5a receives the color difference compensation mode signal, the first pixel R, the second pixel G, and the third pixel B may each have a complex dark area with different grayscale values. And bright areas (not shown). Similarly, the chromatic aberration compensation display screen can be output by averaging the values obtained by summing the grayscale values of the dark regions and the bright regions. Thereby, each pixel can use more sub-pictures to adjust the gray scale value, and the display panel 5a can more effectively compensate the color shift when viewed from the side view, so that the color displayed in the side view is closer to the front view. The color you see when you see it.

In addition, as shown in FIG. 3B, when the display panel 5a receives the high-resolution mode signal, the pixel units 51a may jointly form a plurality of sub-pixel units 511a, each of the sub-pixel units 511a having only a first sub-picture. The prime R1, a second sub-pixel G1, and a third sub-pixel B1. Further, by the more sub-pixel units 511a, the image quality of the display screen of the display panel 5a can be greatly improved.

It is worth mentioning that the pattern and arrangement of the first pixel, the second pixel and the third pixel of each pixel unit are not limited, depending on the design and Requirements, can have different patterns and arrangements.

In summary, the display device and the display module thereof according to the present invention output a high-resolution mode signal or a color difference compensation mode signal to the display panel through a mode switching loop, and the display panel receives high resolution. After the mode signal or the chromatic aberration compensation mode signal, a display screen can be output, whereby the display device and the display module of the present invention can switch between the high resolution mode or the chromatic aberration compensation mode according to different needs of the user.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧ display device

2‧‧‧Backlight module

3‧‧‧ display module

4‧‧‧ mode switching loop

5, 5a‧‧‧ display panel

51, 51a‧‧‧ pixel unit

511, 511a‧‧‧ sub-pixel unit

B‧‧‧ Third pixel

B1‧‧‧ Third sub-pixel

Br‧‧‧ bright area

C‧‧‧Control signal

D‧‧‧Display

Da‧‧‧ Dark Area

G‧‧‧Second pixels

G1‧‧‧ second sub-pixel

Hd‧‧‧High resolution mode signal

L‧‧‧Light

Lc‧‧‧chromatic aberration compensation mode signal

R‧‧‧ first picture

R1‧‧‧ first sub-pixel

1 is a schematic diagram of a display device according to a preferred embodiment of the present invention; FIG. 2A is a schematic diagram of an equivalent circuit of the display panel in the color difference compensation mode; FIG. 2B is a schematic view of the display panel in the high resolution mode. FIG. 3A is a schematic diagram of an equivalent circuit of the display panel according to another variation of the display panel in the color difference compensation mode, and FIG. 3B is a schematic diagram of an equivalent circuit of the display panel in the high resolution mode.

1‧‧‧ display device

2‧‧‧Backlight module

3‧‧‧ display module

4‧‧‧ mode switching loop

5‧‧‧ display panel

C‧‧‧Control signal

D‧‧‧Display

Hd‧‧‧High resolution mode signal

L‧‧‧Light

Lc‧‧‧chromatic aberration compensation mode signal

Claims (14)

A display module includes: a mode switching circuit that outputs a high resolution mode signal or a color difference compensation mode signal; and a display panel that receives the high resolution mode signal or the color difference compensation mode signal to A display screen is output. The display module of claim 1, wherein when the display panel receives the high-resolution mode signal, the display screen outputted by the display panel is a high-resolution display screen. The display module of claim 1, wherein when the display panel receives the color difference compensation mode signal, the display screen outputted by the display panel is a color difference compensation display screen. The display module of claim 1, wherein the display panel has a plurality of pixel units, each pixel unit having a first pixel, a second pixel, and a third pixel. The display module of claim 4, wherein the first pixel, the second pixel, and the third pixel respectively have a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of pixels Three sub-pictures. The display module of claim 5, wherein when the display panel receives the high-resolution mode signal, the pixel units collectively form a plurality of sub-pixel units, each sub-pixel unit having only the same One of the first sub-pixels, one of the second sub-pixels, and one of the third sub-pixels. The display module of claim 4, wherein the display module When the display panel receives the color difference compensation mode signal, the first pixel, the second pixel, and the third pixel respectively have a dark area and a bright area. A display device comprising: a backlight module; and a display module adjacent to the backlight module, comprising: a mode switching circuit, which outputs a high resolution mode signal or a color difference compensation mode signal, and a The display panel receives the high resolution mode signal or the color difference compensation mode signal to output a display screen. The display device of claim 8, wherein when the display panel receives the high-resolution mode signal, the display screen outputted by the display panel is a high-resolution display screen. The display device of claim 8, wherein when the display panel receives the color difference compensation mode signal, the display screen outputted by the display panel is a color difference compensation display screen. The display device of claim 8, wherein the display panel has a plurality of pixel units, each of the pixel units having a first pixel, a second pixel, and a third pixel. The display device of claim 11, wherein the first pixel, the second pixel, and the third pixel respectively have a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third pixels Sub-pixel. The display device of claim 12, wherein when the display panel receives the high-resolution mode signal, the pixel units collectively form a plurality of sub-pixel units, each sub-pixel unit having only the same One of the first sub-pixels, one of the second sub-pixels, and one of the third sub-pixels. The display device of claim 11, wherein when the display panel receives the color difference compensation mode signal, the first pixel, the second pixel, and the third pixel respectively have a dark area and a Bright area.