CN106128371A - A kind of device, display device and the method that picture brightness strengthens - Google Patents

Abstract

The present application discloses a device, a display device and a method for enhancing the brightness of a picture, without changing the brightness of the backlight to realize the enhancement of the brightness of the picture in the high-brightness state or the sub-brightness state, thereby reducing power consumption compared with the method of changing the brightness of the backlight. A device for enhancing screen brightness provided by an embodiment of the present application includes: a light sensing unit, configured to collect the brightness value of ambient light; a determining unit, configured to determine the preset The brightness state is set; the control unit is used to determine the corresponding relationship between the gray scale of the pixel corresponding to the preset brightness state to which the ambient light belongs and the driving voltage, and control the screen display according to the corresponding relationship.

Description

A device, display device and method for enhancing screen brightness

technical field

The present application relates to the field of display, and in particular to a device, display device and method for enhancing screen brightness.

Background technique

In the prior art, the normal indoor ambient light brightness state is defined as the normal state, the outdoor ambient light brightness state is defined as the high brightness state, and the transition state of the ambient light brightness from the normal state to the high brightness state is defined as the secondary high brightness state . At present, in order to improve the picture display effect when the ambient light brightness state is the high brightness state or the sub-high brightness state, the adaptive backlight brightness control (Content Adaptive Brightness Control, CABC) of the logic circuit board (Timing Controller, T-CON) is usually used. Technology or pulse width modulation (Pulse Width Modulation, PWM) tool, by changing the PWM to control the brightness of the backlight, when in the high-brightness state or sub-brightness state, to improve the brightness of the display screen through the above method needs to increase the brightness of the backlight to a large extent , power consumption also increases.

To sum up, in the prior art, the brightness enhancement of the picture in the high-brightness state or the sub-brightness state is achieved by controlling the brightness of the backlight, and the power consumption is relatively large.

Contents of the invention

The embodiment of the present application provides a device, a display device and a method for enhancing the brightness of a picture, without controlling the brightness of the backlight to realize the enhancement of the brightness of the picture in the high-brightness state or the sub-brightness state, and changing the brightness of the display screen by controlling the brightness of the backlight Compared with other technologies, power consumption can be reduced.

A device for enhancing screen brightness provided in an embodiment of the present application, the device includes:

A light-sensing unit for collecting brightness values of ambient light;

a determining unit, configured to determine a preset brightness state to which the ambient light belongs according to the brightness value of the ambient light;

The control unit is configured to determine the corresponding relationship between the gray scale of the pixel corresponding to the preset brightness state to which the ambient light belongs and the driving voltage, and control the screen display according to the corresponding relationship.

In the device for enhancing screen brightness provided in the embodiment of the present application, the light sensing unit collects the brightness value of the ambient light, the determination unit determines the preset brightness state to which the ambient light belongs according to the brightness value of the ambient light, and the control unit determines the brightness value of the ambient light. According to the corresponding relationship between the grayscale of the pixel corresponding to the preset brightness state to which the ambient light belongs and the driving voltage, the screen display is controlled according to the corresponding relationship, so that when the brightness of the ambient light changes, only by changing the grayscale of the pixel The luminance of the display screen can be changed by using a step-by-step driving voltage, and compared with the prior art of changing the luminance of the display screen by controlling the brightness of the backlight, the power consumption can be reduced.

Preferably, the preset brightness state specifically includes: a dark state, a normal state, a bright state and a second bright state.

Preferably, the determining unit is a photoelectric processor.

Preferably, the photoelectric processor is specifically used for:

converting the brightness value of the ambient light into a digital signal, comparing the digital signal with the preset brightness state, and determining the preset brightness state to which the ambient light belongs according to the comparison result.

Preferably, the control unit includes a gamma integrated circuit and a driver chip; wherein,

The gamma integrated circuit is used to determine multiple sets of data information corresponding to the preset brightness state to which the ambient light belongs, and each set of data information includes the gray scale of a pixel and the voltage value for driving the pixel;

The driving chip is configured to determine the corresponding relationship between the grayscale of the pixel and the driving voltage according to the multiple sets of data information, and control the display of the screen according to the corresponding relationship and the grayscale of each pixel of the image to be displayed. .

Preferably, the gamma integrated circuit includes a plurality of storage units, and each storage unit stores multiple sets of the data information corresponding to a preset brightness state;

The determination unit is specifically configured to: determine the preset brightness state to which the ambient light belongs according to the brightness value of the ambient light, and send to the gamma integrated circuit the information corresponding to the preset brightness state to which the ambient light belongs. addressing control signal;

The gamma integrated circuit outputs multiple sets of data information in the storage unit corresponding to the address control signal to the driving chip.

A display device provided in an embodiment of the present application includes the apparatus for enhancing screen brightness provided in the embodiment of the present application.

A method for enhancing screen brightness provided in an embodiment of the present application includes:

Collect the brightness value of ambient light;

determining a preset brightness state to which the ambient light belongs according to the brightness value of the ambient light;

Determine the corresponding relationship between the gray scale of the pixel corresponding to the preset brightness state to which the ambient light belongs and the driving voltage, and control the screen display according to the corresponding relationship.

Preferably, the preset brightness state specifically includes: a dark state, a normal state, a bright state and a second bright state.

Preferably, according to the brightness value of the ambient light, determining the preset brightness state to which the ambient light belongs specifically includes:

converting the brightness value of the ambient light into a digital signal, comparing the digital signal with the preset brightness state, and determining the preset brightness state to which the ambient light belongs according to the comparison result.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

FIG. 1 is a schematic structural diagram of a first device for enhancing screen brightness provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a second device for enhancing screen brightness provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a third device for enhancing screen brightness provided by an embodiment of the present application;

FIG. 4 is a graph of the corresponding relationship between the grayscale of the pixel and the driving voltage provided by the embodiment of the present application;

FIG. 5 is a schematic flow diagram of the operation of a device for enhancing screen brightness provided by an embodiment of the present application;

FIG. 6 is a schematic flowchart of a method for enhancing screen brightness provided by an embodiment of the present application.

detailed description

The embodiment of the present application provides a device, a display device and a method for enhancing the brightness of a picture, without controlling the brightness of the backlight to realize the enhancement of the brightness of the picture in the high-brightness state or the sub-brightness state, thereby reducing the power consumption compared with the method of controlling the brightness of the backlight. consumption.

A device for enhancing screen brightness provided in an embodiment of the present application, as shown in FIG. 1 , includes:

The light sensing unit 1 is used to collect the brightness value of ambient light;

A determining unit 2, configured to determine a preset brightness state to which the ambient light belongs according to the brightness value of the ambient light;

The control unit 3 is configured to determine the corresponding relationship between the gray scale of the pixel corresponding to the preset brightness state to which the ambient light belongs and the driving voltage, and control the screen display according to the corresponding relationship.

In the device for enhancing screen brightness provided in the embodiment of the present application, the light sensing unit collects the brightness value of the ambient light, the determination unit determines the preset brightness state to which the ambient light belongs according to the brightness value of the ambient light, and the control unit determines the brightness value of the ambient light. According to the corresponding relationship between the grayscale of the pixel corresponding to the preset brightness state to which the ambient light belongs and the driving voltage, the screen display is controlled according to the corresponding relationship, so that when the brightness of the ambient light changes, only by changing the grayscale of the pixel The luminance of the display screen can be changed by using a step-by-step driving voltage, and compared with the prior art of changing the luminance of the display screen by controlling the brightness of the backlight, the power consumption can be reduced.

Preferably, the preset brightness state specifically includes: a dark state, a normal state, a sub-brightness state and a high-brightness state. Wherein, the ambient light brightness in the dark state, normal state, sub-brightness state, and high-brightness state increases sequentially. For example, the ambient light brightness ranges in the dark state, normal state, sub-brightness state and high-brightness state are 0-30 Lux, 30-100 Lux, 100-500 Lux and 1000-100000 Lux respectively. The brightness of the display screen in the dark state, normal state, sub-brightness state, and high-brightness state should also increase sequentially, and the brightness of the display screen in the sub-brightness state is higher than that of the display screen in the normal state. Only when the brightness is high, the display effect of the picture can be enhanced in the sub-brightness state.

It should be noted that the embodiment of the present application divides the preset brightness state into four types, and the division of the preset brightness state can also be divided according to specific situations, and is not limited to the four states in the embodiment of the present application. , the brightness range of the preset brightness state can be set according to specific needs, which is not limited in this application.

Preferably, as shown in FIG. 2 , the determination unit is a photoelectric processor 4 .

Preferably, the photoelectric processor 4 is specifically used for:

converting the brightness value of the ambient light into a digital signal, comparing the digital signal with the preset brightness state, and determining the preset brightness state to which the ambient light belongs according to the comparison result.

Preferably, as shown in Figure 3, the control unit includes a gamma integrated circuit 5 and a driver chip 6; wherein,

The gamma integrated circuit 5 is used to determine multiple sets of data information corresponding to the preset brightness state to which the ambient light belongs, and each set of data information includes the gray scale of a pixel and the voltage value for driving the pixel;

For example, multiple groups of data information corresponding to each preset brightness state are stored in the gamma integrated circuit in advance, and each group includes the grayscale value of a pixel and its corresponding driving voltage value. The multiple sets of data information corresponding to each preset brightness state include the gray scales of 8 groups of pixels and the voltage values driving the pixels. Of course, the gray scales of all pixels and the voltage values driving the pixels can also be stored. Different preset brightness states correspond to different sets of data information, that is to say, under different ambient light brightness states, the same gray scale of any pixel corresponds to different voltage values for driving the pixel, so that different ambient light levels can be realized. In the brightness state, the display brightness corresponding to the same gray scale of the pixel is different, so as to realize the control of different brightness of the display screen under different ambient light brightness states.

The driving chip 6 is configured to determine the corresponding relationship between the grayscale of the pixel and the driving voltage according to the multiple sets of data information, and control the picture according to the corresponding relationship and the grayscale of each pixel of the image to be displayed. show.

Preferably, the gamma integrated circuit 5 includes a plurality of storage units, and each storage unit stores multiple sets of data information corresponding to a preset brightness state;

As shown in Figure 4, the relationship between the gray scale of a pixel stored in a storage unit and the voltage value driving the pixel can be represented by a Gamma correction curve, the abscissa in the figure is the gray scale value of the pixel, and the ordinate is The normalized value of the driving voltage corresponding to different grayscale values. In the gamma integrated circuit 5, different storage units store multiple sets of data information corresponding to different preset brightness states, that is to say, the relationship between the gray scale of a pixel in different preset brightness states and the voltage value driving the pixel is passed through different In the figure, the four gamma curves "Gamma 1.9, Gamma 2.0, Gamma 2.2, Gamma 2.5" correspond to four preset brightness states, and 1.9, 2.0, 2.2 and 2.5 represent different presets saved in the storage unit The identification of the gamma curve that the relationship between the gray scale of the pixel in the brightness state and the voltage value driving the pixel satisfies. For example, as shown in Figure 4, different gamma curves have different voltages corresponding to the same grayscale value. For the same grayscale value, for example, when the grayscale value is a, the voltage in the Gamma1.9 curve is higher than the voltage in the Gamma2.0 curve. Correspondingly, if for the same pixel of the same screen, the display brightness control is performed using the corresponding relationship between the gray scale of the pixel represented by the Gamma 1.9 curve and the driving voltage, compared with the gray scale of the pixel represented by the Gamma 2.0 curve and the driving voltage. The corresponding relationship is used to control the display brightness, and the display brightness should be high. Therefore, the output of the data information corresponding to the Gamma 1.9 curve can effectively enhance the brightness of the display screen compared to the output of the data information corresponding to the Gamma 2.0 curve.

Optionally, the multiple sets of data information stored by each storage unit include the gray scale of 8 groups of pixels and the voltage value for driving the pixel; the 8 sets of data information stored by each storage unit can be, as shown in Figure 4, The a, b, c, d, e, f, g, and h grayscales of the pixels in the gamma curve corresponding to the storage unit and the corresponding driving voltages.

The determining unit is specifically configured to: determine the preset brightness state to which the ambient light belongs according to the brightness value of the ambient light, and send the corresponding preset brightness state to the gamma integrated circuit 5 . The addressing control signal;

The gamma integrated circuit 5 outputs multiple sets of data information in the storage unit corresponding to the address control signal to the driving chip 6 .

When the preset brightness state to which the ambient light belongs changes, the addressing control signal output by the determining unit will change accordingly, thereby controlling the gamma integrated circuit 5 to address different storage units and output corresponding Data information. For example, when the determination unit determines that the ambient light belongs to the sub-brightness state, the determination unit sends an addressing control signal of the sub-brightness state to the gamma integrated circuit, and the addressing control signal controls the gamma The storage unit storing the data information of the sub-brightness state in the integrated circuit outputs the gray scales of the 8 groups of pixels corresponding to the sub-brightness state and the voltage values of the driving pixels to the driving chip 6, and the driving chip 6 receives the 8 Determine the corresponding relationship between the gray level of the pixel and the voltage value of the driving pixel, and determine the corresponding driving voltage according to the gray level of each pixel in the image to be displayed according to the corresponding relationship , to control the screen display.

Since the output data information of the gamma integrated circuit is real-time output, the response speed is fast, as long as the address control signal changes the address bit, the output data information can change immediately.

Based on the same idea, an embodiment of the present application provides a display device, including the above-mentioned apparatus for enhancing screen brightness.

As shown in Figure 5, when the brightness of the external environment changes, the specific working process of the device for enhancing the brightness of the picture is as follows:

S501. The light sensing unit collects the brightness value of the ambient light, and sends the brightness value of the current ambient light to the photoelectric processor;

S502. The photoelectric processor determines the preset brightness state to which the ambient light belongs according to the brightness value of the ambient light sent by the light sensing unit, and sends the preset brightness state to which the ambient light belongs to the gamma integrated circuit Corresponding addressing control signal;

S503. The gamma integrated circuit outputs multiple sets of data information in the storage unit corresponding to the address control signal to the drive chip;

S504. The driver chip determines the corresponding relationship between the gray scale of the pixel and the driving voltage according to the multiple sets of data information, and controls the screen display according to the corresponding relationship and the gray scale of each pixel of the image to be displayed.

A method for enhancing screen brightness provided in an embodiment of the present application, as shown in FIG. 6 , includes:

S601. Collect brightness values of ambient light;

S602. Determine a preset brightness state to which the ambient light belongs according to the brightness value of the ambient light;

S603. Determine the corresponding relationship between the grayscale of the pixel corresponding to the preset brightness state to which the ambient light belongs and the driving voltage, and control the screen display according to the corresponding relationship.

Preferably, the preset brightness state specifically includes: a dark state, a normal state, a bright state and a second bright state.

Preferably, according to the brightness value of the ambient light, determining the preset brightness state to which the ambient light belongs specifically includes:

converting the brightness value of the ambient light into a digital signal, comparing the digital signal with the preset brightness state, and determining the preset brightness state to which the ambient light belongs according to the comparison result.

To sum up, the device, display device, and method for enhancing screen brightness provided by the embodiments of the present application determine the grayscale of pixels corresponding to the preset brightness state to which the ambient light belongs by determining the preset brightness state to which the ambient light belongs. According to the corresponding relationship between the level and the driving voltage, the screen display is controlled, so that when the brightness of the ambient light changes, the brightness of the display screen can be changed only by changing the gray-scale driving voltage of the pixel, which is different from controlling the brightness of the backlight. Compared with the prior art of changing the brightness of the display screen, the power consumption can be reduced.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (10)

1. An apparatus for enhancing brightness of a picture, the apparatus comprising:

the light sensing unit is used for collecting the brightness value of the ambient light;

the determining unit is used for determining a preset brightness state to which the ambient light belongs according to the brightness value of the ambient light;

and the control unit is used for determining the corresponding relation between the gray scale of the pixel corresponding to the preset brightness state of the ambient light and the driving voltage and controlling the picture display according to the corresponding relation.

2. The apparatus according to claim 1, wherein the preset brightness state specifically comprises: dark state, normal state, highlight state, and sub-highlight state.

3. The apparatus of claim 2, wherein the determination unit is a photo processor.

4. The apparatus of claim 3, wherein the optoelectronic processor is specifically configured to:

and converting the brightness value of the environment light into a digital signal, comparing the digital signal with the preset brightness state, and determining the preset brightness state of the environment light according to the comparison result.

5. The apparatus of claim 1, wherein the control unit comprises a gamma integrated circuit and a driving chip; wherein,

the gamma integrated circuit is used for determining a plurality of groups of data information corresponding to the preset brightness state of the ambient light, wherein each group of data information comprises a gray scale of a pixel and a voltage value for driving the pixel;

and the driving chip is used for determining the corresponding relation between the gray scale of the pixel and the driving voltage according to the multiple groups of data information and controlling the display of the picture according to the corresponding relation and the gray scale of each pixel of the image to be displayed.

6. The apparatus of claim 5, wherein the gamma IC comprises a plurality of memory units, each memory unit storing a plurality of sets of the data information corresponding to a predetermined brightness state;

the determining unit is specifically configured to: determining a preset brightness state of the ambient light according to the brightness value of the ambient light, and sending an addressing control signal corresponding to the preset brightness state of the ambient light to the gamma integrated circuit;

and the gamma integrated circuit outputs a plurality of groups of data information in the storage unit corresponding to the addressing control signal to the driving chip.

7. A display device comprising the apparatus of any one of claims 1 to 6.

8. A method for enhancing brightness of a picture, comprising:

collecting the brightness value of the ambient light;

determining a preset brightness state of the ambient light according to the brightness value of the ambient light;

and determining the corresponding relation between the gray scale of the pixel corresponding to the preset brightness state of the ambient light and the driving voltage, and controlling the picture display according to the corresponding relation.

9. The method according to claim 8, wherein the preset brightness state specifically comprises: dark state, normal state, highlight state, and sub-highlight state.

10. The method according to claim 9, wherein determining the preset brightness state to which the ambient light belongs according to the brightness value of the ambient light specifically comprises:

and converting the brightness value of the environment light into a digital signal, comparing the digital signal with the preset brightness state, and determining the preset brightness state of the environment light according to the comparison result.