CN109243381B - Brightness adjusting method and system of display system and display system - Google Patents
Brightness adjusting method and system of display system and display system Download PDFInfo
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- CN109243381B CN109243381B CN201811320794.4A CN201811320794A CN109243381B CN 109243381 B CN109243381 B CN 109243381B CN 201811320794 A CN201811320794 A CN 201811320794A CN 109243381 B CN109243381 B CN 109243381B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a brightness adjusting method of a display system, which is used for adjusting the brightness of a display panel penetrating through glasses, wherein the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, and the backlight module comprises a plurality of light-emitting elements; the brightness adjusting method of the display system comprises the following steps: writing a first driving signal into the display panel, and simultaneously controlling the first lens to be opened; when the time for writing the first driving signal into the display panel reaches the preset time, controlling each light-emitting element of the backlight module to be sequentially started; adjusting a first drive current of each light emitting element; writing a second driving signal into the display panel, and simultaneously controlling the second lens to be opened; when the time for writing the second driving signal into the display panel reaches the preset time, controlling each light-emitting element of the backlight module to be sequentially started; the second drive current of each light emitting element is adjusted.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a brightness adjusting method and system of a display system and the display system.
Background
The brightness displayed by the liquid crystal panel is controlled by the mutual matching of the backlight module, the signal driving module and the glasses driving module. The backlight module is composed of a plurality of light-emitting elements which are arranged according to a certain mode, the light-emitting elements are used for lightening the blocks of the liquid crystal panel, and the average backlight brightness of each block of the liquid crystal panel is different due to the difference of manufacturing processes of the light-emitting elements; the liquid crystal panel and the liquid crystal glasses need to be driven for a certain time to output stable penetration rate due to the physical characteristics of liquid crystal; if the liquid crystal glasses are started synchronously with the writing of the liquid crystal panel driving signal and the starting of the backlight module, the penetration response of the liquid crystal glasses, the penetration response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel are acted together to enable the penetration response of the liquid crystal glasses corresponding to each block of the liquid crystal panel, the product of the penetration response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel to be unequal, and therefore the brightness of each block of the liquid crystal panel penetrating through the liquid crystal glasses is uneven.
Disclosure of Invention
Therefore, it is necessary to provide a brightness adjustment method, a brightness adjustment system and a display system for a display system, which aim at the problem that the transmittance response of the liquid crystal glasses corresponding to each block of the liquid crystal panel, the product of the transmittance response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel are not equal due to the combined action of the transmittance response of the liquid crystal glasses, the transmittance response of the liquid crystal panel and the backlight average brightness of each block of the liquid crystal panel, so that the brightness of each block of the liquid crystal panel passing through the liquid crystal glasses is not uniform.
A brightness adjusting method of a display system is used for adjusting the brightness of a display panel penetrating through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, and the backlight module comprises a plurality of light-emitting elements; the brightness adjusting method of the display system comprises the following steps:
writing a first driving signal into the display panel, and simultaneously controlling the first lens to be opened;
when the time for writing the first driving signal into the display panel reaches the preset time, controlling each light-emitting element of the backlight module to be sequentially started;
adjusting a first drive current of each light emitting element;
writing a second driving signal into the display panel, and simultaneously controlling the second lens to be opened;
when the time for writing the second driving signal into the display panel reaches the preset time, controlling each light-emitting element of the backlight module to be sequentially started;
the second drive current of each light emitting element is adjusted.
In one embodiment, the step of adjusting the first driving current of each light emitting element further comprises:
controlling the starting sequence of the corresponding light-emitting elements according to the average backlight brightness of each block;
the step of adjusting the second driving current of each light emitting element further comprises:
and controlling the starting sequence of the corresponding light-emitting elements according to the average backlight brightness of each block.
In one embodiment, the writing the first driving signal into the display panel and the controlling the first mirror to be turned on includes:
writing a first driving signal into the display panel, and controlling each light-emitting element of the backlight module to be sequentially started;
detecting the average backlight brightness of each block;
the average backlight brightness of each block is sorted.
In one embodiment, the writing the first driving signal into the display panel and the controlling the first mirror to be turned on further includes:
writing a first driving signal into the display panel, controlling the first lens to be opened and controlling each light-emitting element of the backlight module to be opened;
detecting the penetration rate of each block of the display panel along with the change of time and recording the response time of the penetration rate;
and comparing the penetration rate to obtain the preset time according to the response time.
A brightness adjusting system is used for adjusting the brightness of a display panel through glasses, the display panel is lighted by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, the backlight module comprises a plurality of light-emitting elements,
the brightness adjusting system comprises a signal driving module, a glasses driving module and a control module;
the signal driving module is used for writing a first driving signal into the display panel; the glasses driving module is used for controlling the first lens to be opened; the control module is used for controlling the signal driving module to write a first driving signal into the display panel, and the time for controlling the glasses driving module to open the first lens is consistent with the time for controlling the glasses driving module to open the first lens;
the control module is further used for controlling each light-emitting element of the backlight module to be sequentially started when the time for writing the first driving signal into the display panel reaches the preset time;
the control module is further used for adjusting the first driving current of each light-emitting element;
the signal driving module is also used for writing a second driving signal into the display panel; the glasses driving module is also used for controlling the opening of the second lens; the control module is also used for controlling the time for writing the second driving signal into the display panel by the signal driving module to be consistent with the time for controlling the second lens to be opened by the glasses driving module;
the control module is further configured to adjust a second drive current of each light emitting element.
The control module is further used for controlling the starting sequence of the corresponding light-emitting elements according to the backlight average brightness of each block.
Also includes a brightness detector; the brightness detector is used for detecting the average backlight brightness of each block and transmitting the average backlight brightness to the control module when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started in sequence; the control module is also used for sequencing the average backlight brightness of each block.
The device also comprises a penetration rate detector; the penetration rate detector is used for detecting the penetration rate of each block of the display panel along with the change of time and recording the response time of the penetration rate when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started; the penetration rate detector is also used for transmitting the penetration rate and the response time to the control module; the control module is further used for comparing the penetration rate to obtain the preset time according to the response time.
The backlight source is a lateral light source which comprises a single-side lateral light source and a double-side lateral light source; when the lateral light source is a single-side lateral light source, the number of the light-emitting elements is N, the blocks correspond to the light-emitting elements one by one, and each light-emitting element is used for lighting a corresponding block; when the lateral light source is a bilateral lateral light source, the number of the light-emitting elements is 2N, every two light-emitting elements correspond to one block, and every two light-emitting elements light up one corresponding block.
A display system comprises a display panel and the brightness adjusting system.
According to the brightness adjusting method, the brightness adjusting system and the display system of the display system, on the premise that the plurality of light emitting elements of the backlight module are sequentially started, the first lens is controlled to be started while the driving signal is written into the display panel, when the time for writing the first driving signal into the display panel reaches the preset time, each light emitting element of the backlight module is controlled to be sequentially started, at the moment, the penetration rate of each block of the display panel tends to be equal, and the penetration rate of glasses corresponding to each block tends to be equal; and the average backlight brightness of each block of the display panel is further adjusted by adjusting the driving current of each light-emitting element, so that the product of the penetration rate of each block of the display panel, the penetration rate of the glasses corresponding to each block and the average backlight brightness of each block of the display panel is equal, and the brightness of each block of the display panel penetrating through the glasses is uniform.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for adjusting brightness of a display system in one embodiment;
FIG. 2 is a diagram illustrating a single-sided lateral-entry light source and a block mapping according to an embodiment;
FIG. 3 is a diagram illustrating a correspondence between dual edge lateral light sources and blocks in an embodiment;
FIG. 4 is a diagram of a direct light source and a block according to an embodiment;
FIG. 5 is a timing diagram illustrating the transmittance of the display panel, the transmittance of the glasses and the backlight brightness during a display period according to an embodiment;
FIG. 6 is a timing diagram of the transmittance of the display panel, the transmittance of the glasses and the backlight brightness in one display period according to another embodiment;
FIG. 7 is a timing diagram illustrating the transmittance of the display panel, the transmittance of the glasses and the backlight brightness in one display period according to another embodiment;
FIG. 8 is a timing diagram illustrating the transmittance of the display panel, the transmittance of the glasses and the backlight brightness in one display period according to another embodiment;
FIG. 9 is a timing diagram illustrating transmittance of the display panel, transmittance of the glasses and backlight brightness in a display period according to another embodiment;
FIG. 10 is a flowchart of a brightness adjustment method of a display system according to another embodiment;
FIG. 11 is a flowchart of a brightness adjustment method of a display system according to another embodiment;
fig. 12 is a functional block diagram of a brightness adjustment system in one embodiment.
Detailed Description
Please refer to fig. 1, which is a flowchart illustrating a brightness adjusting method of a display system according to a preferred embodiment of the present application. It should be noted that the method of the present application is not limited to the order of the following steps, and in other embodiments, the method of the present application may include only a part of the following steps, or a part of the steps may be deleted. In addition, in other embodiments, one step may be divided into a plurality of steps, or a plurality of steps may be combined into one step.
The brightness adjusting method of the display system is used for adjusting the brightness of a display panel penetrating through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, the backlight module comprises a plurality of light-emitting elements, and the backlight source is formed by the light-emitting elements; the backlight source is a side-in light source. The brightness adjusting method of the display system comprises the following steps:
in step S1, the first driving signal is written into the display panel and the first mirror is controlled to be turned on.
In one embodiment, the glasses are 3D liquid crystal glasses, and the display panel is a 3D liquid crystal display panel.
The backlight may be a side-entry light source or a direct-illumination light source. The lateral light source comprises a single-side lateral light source and a double-side lateral light source. The control module controls each light-emitting element of the backlight module to be sequentially started. In one display period, the driving signals include a first driving signal and a second driving signal.
As shown in fig. 2, in one embodiment, the lateral light source is a single-side lateral light source, the light emitting elements are LEDs and are N in number, the blocks correspond to the LEDs one by one, and each LED is used for lighting a corresponding block, for example, LED1 lights block BL1, LED2 lights block BL 2.
As shown in fig. 3, in one embodiment, the lateral light source is a double-sided lateral light source, the number of the light emitting elements is 2N, each two LEDs correspond to one block, and each two LEDs light one block, for example, LED1A and LED1B light block BL1, LED2A and LED2B light block BL 2.
The lateral light source uses a small number of light-emitting elements, which is beneficial to reducing the weight of the product.
In one embodiment, as shown in fig. 4, the backlight source is a direct-lit light source. The number of the light-emitting elements is N × M, the light-emitting elements are arranged in a matrix of N rows and M columns, M LEDs in each row correspond to one block, M LEDs in each row are lighted to correspond to one block, and the light-emitting elements are LEDs. The LEDs 1A, LEDs 1B, …, LED1M make up a first row of LED backlight units LEDs 1; LED2A, LED2B, …, LED2M make up a second row of LED backlight units, LEDs 2; …, LEDNA, LEDNB, …, LEDNM constitute the Nth row of LED backlight units LEDN. Each row of LED backlight units is configured to illuminate a corresponding one of the blocks, for example, the LED1 illuminates the block BL1, the LED2 illuminates the block BL 2.
The direct light source can make the brightness of each block of the display panel more uniform.
The light emitting element may also be a CCFL (Cold Cathode Fluorescent Lamp).
In step S2, when the time for writing the first driving signal into the display panel reaches a preset time, each light emitting element of the backlight module is controlled to be turned on in sequence.
When the time for writing the first driving signal into the display panel reaches the preset time, the penetration rate response of the display panel is stable and tends to be consistent, and the penetration rate response of the glasses is stable and tends to be consistent.
The brightness of each block of the display panel passing through the liquid crystal glasses is the product of the transmittance of the display panel, the transmittance of the glasses and the average backlight brightness of the display panel. The average backlight luminance of the display panel is the average backlight luminance for lighting the display panel, and the luminance of the display panel is the luminance displayed by the display panel. Because of the physical characteristics of liquid crystal response, the display panel and the glasses need to be driven for a certain time to output stable penetration rate, the average backlight brightness of a plurality of blocks of the display panel are different from each other, and if the driving signals are written into the display panel and the glasses are started synchronously with the backlight module, the penetration rate of each block of the display panel, the penetration rate of the glasses corresponding to each block and the product of the average backlight brightness of each block of the display panel are different. Therefore, the transmittance of each block of the display panel tends to be equal through the adjustment of the sequence and time of writing the driving signals into the display panel, the opening of the glasses and the opening of the backlight module, and further the product of the transmittance of each block of the display panel, the transmittance of the glasses corresponding to each block and the backlight average brightness of each block of the display panel tends to be equal, so that the brightness of each block of the display panel passing through the liquid crystal glasses tends to be uniform. The average luminance of the backlight of each block corresponds to the average luminance of the light emitting elements of each block. The transmittance of the glasses corresponding to each zone is the transmittance of the glasses corresponding to the light-emitting element corresponding to each zone.
This application is in under the prerequisite that a plurality of light emitting component of backlight module opened in proper order, through controlling first lens to open when writing into display panel with drive signal, when the time that first drive signal wrote into display panel reached preset time, every light emitting component of backlight module was opened in proper order again in control, and at this moment, the transmissivity of every block of display panel tends to equal and the transmissivity of the glasses that every block corresponds tends to equal.
In step S3, the first driving current of each light emitting element is adjusted.
The first driving current is a driving current corresponding to the writing of the first driving signal and the opening of the first lens in one display period of the display panel for each light emitting element. The driving current is used for driving the light-emitting element to emit light.
The driving current of each light-emitting element is adjusted, and then the average backlight brightness of each block of the display panel is adjusted, so that the product of the penetration rate of each block of the display panel, the penetration rate of the glasses corresponding to each block and the average backlight brightness of each block of the display panel is equal, and the brightness of each block of the display panel penetrating through the liquid crystal glasses is uniform.
In addition, in one display period of the display panel, the first driving signal is written into the display panel, and the on time of each light emitting element is turned off after reaching a corresponding certain time.
In step S4, the turn-on sequence of the corresponding light emitting elements is controlled according to the average backlight brightness of each block.
The lens has a smaller penetration rate in the initial stage of opening, and the penetration rate of the lens gradually increases and becomes stable with the increase of the opening time.
In one embodiment, each light emitting element of the backlight module is controlled to be sequentially turned on from high to low according to the average backlight brightness of the corresponding block.
The light-emitting elements corresponding to the blocks with the highest average brightness are started at the stage that the penetration rate of the glasses is smaller, and in the process that the penetration rate of the glasses is gradually increased to be stable, the rest light-emitting elements are started in sequence from high to low according to the backlight average brightness of the corresponding blocks, so that the product of the penetration rate of each block of the display panel and the penetration rate of the glasses corresponding to each block of the display panel is equal to the product of the backlight average brightness of each block of the display panel, and the brightness of each block of the display panel penetrating through the glasses is uniform.
In step S5, the second driving signal is written into the display panel and the second mirror is controlled to be turned on.
In step S6, when the time for writing the second driving signal into the display panel reaches a preset time, each light emitting element of the backlight module is controlled to be turned on in sequence.
When the time for writing the first driving signal into the display panel reaches the preset time, the penetration rate response of the display panel is stable and tends to be consistent, and the penetration rate response of the glasses is stable and tends to be consistent.
In step S7, the second driving current of each light emitting element is adjusted.
In step S8, the turn-on sequence of the corresponding light emitting elements is controlled according to the average backlight brightness of each block.
The second driving current is a driving current for each light emitting element to be written in corresponding to the second driving signal and for the second mirror to be turned on in one display period of the display panel.
In addition, in one display period of the display panel, the second driving signal is written into the display panel, and the on time of each light emitting element is turned off after reaching a corresponding certain time.
The on-time of each light emitting element is equal.
To better illustrate the method of the present application, a detailed description is given below with reference to fig. 5 to 9. Referring to fig. 5, the turn-on time of each light emitting element is t1, t 2.. and tN, i.e., the lighting time of each corresponding block is t1, t 2.. ton, t1 ═ t2 … ═ tN ═ t, where t is the preset time. Curve 1 is the first driving signal written into the display panel. Curve 2 is the first lens transmittance of the first lens corresponding to each light emitting device, and the first lens transmittance of the first lens corresponding to each light emitting device is L _ T _1, L _ T _2, …, L _ T _ N, respectively. "Δ" of the first half of the display period of fig. 5 is the first panel transmittance corresponding to the on-time of each light emitting element for each tile, and the first panel transmittance corresponding to the on-time of each light emitting element for each tile is OC _ TL _1, OC _ TL _2, …, OC _ TL _ N, respectively.
The rectangle in the first half of the display period of fig. 5 represents the average backlight luminance of each block, the average luminance of the block BL1 is BL _ ave _1, the average luminance of the block BL2 is BL _ ave _ 2. Due to the difference in the manufacturing process of the backlight module, BL _ ave _1 ≠ BL _ ave _2 ≠ … ≠ BL _ ave _ N. At this time, the luminance BL _ ave _1 _ OC _ TL _1 _ L _ T _1 ≠ BL _ ave _2 _ OC _ TL _2 _ L _ T _2 ≠ … ≠ BL _ ave _ N _ OC _ TL _ N _ L _ T _ N of each block of the display panel viewed by the user through the first mirror, i.e., the luminance of each block of the display panel through the first mirror is not uniform.
Referring to fig. 6 and 7, in the present application, the first mirror is controlled to be turned on while the first driving signal is written into the display panel, when the time that the first driving signal is written into the display panel reaches a preset time, each light emitting element of the backlight module is controlled to be turned on in sequence, and the driving current of each light emitting element is adjusted, so as to adjust the average backlight brightness of each block of the display panel, in the first half of the display period, the average brightness of the block BL1 is changed from BL _ ave _1 to BL _ ave _ L1 ', the average brightness of the block BL2 is changed from BL _ ave _2 to BL _ ave _ L2 ', and the average brightness of the block BLN is changed from BL _ ave _ N to BL _ ave _ LN '. The first panel transmittance of each zone corresponding to the on-time of each light emitting element is changed from OC _ TL _1, OC _ TL _2, …, OC _ TL _ N to OC _ TL _1 ', OC _ TL _ 2', …, OC _ TL _ N ', OC _ TL _ 1' ≈ OC _ TL _2 '… ≈ OC _ TL _ N', respectively. The first lens penetration rate of the first lens corresponding to each light emitting element is changed from L _ T _1, L _ T _2, …, L _ T _ N to L _ T _1 ', L _ T _ 2', …, L _ T _ N ', L _ T _ 1' ≈ L _ T _2 '… ≈ L _ T _ N', respectively. At this time, the luminance BL _ ave _ L1 ' × OC _ TL _1 ' × L _ T _1 ' ═ BL _ ave _ L2 ' × OC _ TL _2 ' × L _ T _2 ' ═ BL _ ave _ LN ' × OC _ TL _ N ' × L _ T _ N ' of each block of the display panel seen by the user through the first mirror is uniform.
In the second half of the display period, the average luminance of the block BL1 is changed from BL _ ave _1 to BL _ ave _ R1 ', the average luminance of the block BL2 is changed from BL _ ave _2 to BL _ ave _ R2 ', and the average luminance of the block BLN is changed from BL _ ave _ N to BL _ ave _ R N '. The second glasses penetration rate of the second lens corresponding to each light emitting element is changed from R _ T _1, R _ T _2, …, R _ T _ N to R _ T _1 ', R _ T _ 2', …, R _ T _ N ', R _ T _ 1' ≈ R _ T _2 '… ≈ R _ T _ N', respectively. Each patch corresponds to the second panel transmittance for the on-time of each light emitting element, which is changed from OC _ TR _1, OC _ TR _2, …, OC _ TR _ N to OC _ TR _1 ', OC _ TR _ 2', …, OC _ TR _ N ', OC _ TR _ 1' ≈ OC _ TR _2 '… ≈ OC _ TR _ N', respectively. At this time, the luminance BL _ ave _ R1 ' × OC _ TR _1 ' × R _ T _1 ' ═ BL _ ave _ R2 ' × OC _ TR _2 ' × R _ T _2 ' ═ BL _ ave _ R N ' × OC _ TR _ N ' × R _ T _ N ' of each block of the display panel seen by the user through the first mirror is uniform in luminance through the second mirror.
Referring to fig. 8 to 9, in the present application, the light emitting elements corresponding to the block with the highest average brightness are turned on first at the stage when the transmittance of the glasses is smaller, and the remaining light emitting elements are turned on sequentially from the high to the low of the backlight average brightness of the corresponding blocks in the process that the transmittance of the glasses is gradually increased to be stable, as shown in the figure, the light emitting element corresponding to the block BL2 with the highest average brightness is turned on first, then the light emitting element corresponding to the block BL1 with the second highest average brightness is turned on, and finally the light emitting element corresponding to the block BLN with the lowest average brightness is turned on, so that the brightness of each block of the display panel viewed by the user through the glasses is uniform.
Referring to fig. 10, in an embodiment, step S1 is preceded by the steps of:
step S01, writing the first driving signal into the display panel, and controlling each light emitting element of the backlight module to turn on in sequence.
In step S02, the average backlight brightness of each block is detected.
In step S03, the average backlight brightness of each block is sorted.
Referring to fig. 10, in an embodiment, step S1 is preceded by the steps of:
step S10, writing the first driving signal into the display panel, controlling the first lens to turn on and controlling each light emitting element of the backlight module to turn on.
Step S20, detecting the penetration rate of each block of the display panel changing with time and recording the response time of the penetration rate.
And step S30, comparing the penetration rate to obtain the preset time according to the response time.
To sum up, in the brightness adjustment method of the display system of the present application, on the premise that the backlight source is a side-in light source and the plurality of light emitting elements of the backlight module are sequentially turned on, the first lens is controlled to be turned on while the driving signal is written into the display panel, and when the time for writing the first driving signal into the display panel reaches the preset time, each light emitting element of the backlight module is controlled to be sequentially turned on, at this time, the penetration rate of each block of the display panel tends to be equal and the penetration rate of the glasses corresponding to each block tends to be equal; and the average backlight brightness of each block of the display panel is further adjusted by adjusting the driving current of each light-emitting element, so that the product of the transmittance of each block of the display panel, the transmittance of the glasses corresponding to each block and the average backlight brightness of each block of the display panel is equal, and the brightness of each block of the display panel penetrating through the liquid crystal glasses is uniform.
In addition, the light-emitting elements corresponding to the block with the highest average brightness are started at the stage that the penetration rate of the glasses is smaller, and in the process that the penetration rate of the glasses is gradually increased to be stable, the rest light-emitting elements are started in sequence according to the sequence that the backlight average brightness of the corresponding blocks is from high to low, so that the penetration rate of each block of the display panel, the penetration rate of the glasses corresponding to each block and the product of the backlight average brightness of each block of the display panel are equal.
The following describes in detail a brightness adjustment method of a display system according to an embodiment of the present application with reference to fig. 12. It should be noted that, the brightness adjustment system shown in fig. 12 is used for executing the method of the embodiment shown in fig. 1 of the present application, and for convenience of description, only the portion related to the embodiment of the present application is shown, and details of the technology are not disclosed, please refer to the embodiment shown in fig. 1 of the present application.
Referring to fig. 12, the brightness adjusting system is used for adjusting the brightness of a display panel through glasses, the display panel is lighted by a backlight module, the glasses include a first lens and a second lens, the display panel includes a plurality of blocks, the backlight module includes a plurality of light emitting elements, and the plurality of light emitting elements form a backlight source. The brightness adjusting system includes a signal driving module 10, a glasses driving module 20 and a control module 30.
The signal driving module 10 is used for writing a first driving signal into the display panel. The glasses driving module 20 is used for controlling the first lens to open. The control module 30 is configured to control the time when the signal driving module 10 writes the first driving signal into the display panel to be consistent with the time when the glasses driving module 20 controls the first lens to be turned on. The control module 30 is further configured to control each light emitting element of the backlight module to be sequentially turned on when the time for writing the first driving signal into the display panel reaches a preset time. The control module 30 is also configured to adjust the first drive current of each light emitting element.
The signal driving module 10 is further configured to write a second driving signal into the display panel. The glasses driving module 20 is further configured to control the second lens to be opened. The control module 30 is further configured to control the time when the signal driving module 10 writes the second driving signal into the display panel to be consistent with the time when the glasses driving module 20 controls the second lens to be turned on. The control module 30 is also configured to adjust the second drive current of each light emitting element.
The control module 30 is further configured to control the turn-on sequence of the corresponding light-emitting elements according to the average backlight brightness of each block.
The brightness adjustment system further includes a brightness detector 50; the brightness detector 50 is configured to detect the average backlight brightness of each block and transmit the average backlight brightness to the control module 30 when the signal driving module 10 writes a first driving signal into the display panel, the glasses driving module 20 controls the first lens to be turned on, and the control module 30 controls each light emitting element of the backlight module to be turned on in sequence. The control module 30 is further configured to sort the average backlight brightness of each block.
The brightness adjustment system further comprises a transmittance detector 40. The transmittance detector 40 is configured to detect a transmittance of each block of the display panel changing with time and record a response time of the transmittance when the signal driving module 10 writes a first driving signal into the display panel, the glasses driving module 20 controls the first lens to be turned on and the control module 30 controls each light emitting element of the backlight module to be turned on. The penetration detector 40 is also used to transmit the penetration and the response time to the control module 30. The control module 30 is further configured to compare the penetration rate to obtain the preset time according to the response time.
According to the brightness adjusting system, on the premise that the plurality of light emitting elements of the backlight module are sequentially started, the first lens is controlled to be started while the driving signal is written into the display panel, and when the time for writing the first driving signal into the display panel reaches the preset time, each light emitting element of the backlight module is controlled to be started simultaneously, at the moment, the penetration rate of each block of the display panel tends to be equal, and the penetration rate of glasses corresponding to each block tends to be equal; and the average backlight brightness of each block of the display panel is further adjusted by adjusting the driving current of each light-emitting element, so that the product of the transmittance of each block of the display panel, the transmittance of the glasses corresponding to each block and the average backlight brightness of each block of the display panel is equal, and the brightness of each block of the display panel penetrating through the liquid crystal glasses is uniform.
In addition, the light-emitting elements corresponding to the block with the highest average brightness are started at the stage that the penetration rate of the glasses is smaller, and in the process that the penetration rate of the glasses is gradually increased to be stable, the rest light-emitting elements are started in sequence according to the sequence that the backlight average brightness of the corresponding blocks is from high to low, so that the penetration rate of each block of the display panel, the penetration rate of the glasses corresponding to each block and the product of the backlight average brightness of each block of the display panel are equal.
The application also provides a display system, which comprises a display panel and the brightness adjusting system.
The display panel of the embodiment of the invention can be any one of the following: a liquid crystal display panel, an OLED display panel, a QLED display panel, a Twisted Nematic (TN) or Super Twisted Nematic (STN) type, an In-Plane Switching (IPS) type, a Vertical Alignment (VA) type, a curved panel, or other display panels.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A brightness adjusting method of a display system is used for adjusting the brightness of a display panel penetrating through glasses, the display panel is lightened by a backlight module, the glasses comprise a first lens and a second lens, the display panel comprises a plurality of blocks, the backlight module comprises a plurality of light-emitting elements, the plurality of light-emitting elements form a backlight source, and the backlight source is a side-in light source; the brightness adjusting method of the display system is characterized by comprising the following steps of:
writing a first driving signal into the display panel, and controlling each light-emitting element of the backlight module to be sequentially started;
detecting the average backlight brightness of each block;
sorting the average backlight brightness of each block;
writing a first driving signal into the display panel, and simultaneously controlling the first lens to be opened;
when the time for writing the first driving signal into the display panel reaches the preset time, controlling each light-emitting element of the backlight module to be sequentially turned on from high to low according to the backlight average brightness of each block;
adjusting a first drive current of each light emitting element;
writing a second driving signal into the display panel, and simultaneously controlling the second lens to be opened;
when the time for writing the second driving signal into the display panel reaches the preset time, controlling each light-emitting element of the backlight module to be sequentially turned on from high to low according to the backlight average brightness of each block;
the second drive current of each light emitting element is adjusted.
2. The method of claim 1, wherein the writing the first driving signal to the display panel and the controlling the first mirror to be turned on further comprises:
writing a first driving signal into the display panel, controlling the first lens to be opened and controlling each light-emitting element of the backlight module to be opened;
detecting the penetration rate of each block of the display panel along with the change of time and recording the response time of the penetration rate;
and comparing the penetration rate to obtain the preset time according to the response time.
3. A brightness adjusting system for adjusting brightness of a display panel through glasses, the display panel being lighted by a backlight module, the glasses including a first lens and a second lens, the display panel including a plurality of blocks, the backlight module including a plurality of light emitting elements,
the brightness adjusting system comprises a signal driving module, a brightness detector, a glasses driving module and a control module;
the brightness detector is used for detecting the average backlight brightness of each block and transmitting the average backlight brightness to the control module when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started in sequence; the control module is also used for sequencing the average backlight brightness of each block;
the signal driving module is used for writing a first driving signal into the display panel; the glasses driving module is used for controlling the first lens to be opened; the control module is used for controlling the signal driving module to write a first driving signal into the display panel, and the time for controlling the glasses driving module to open the first lens is consistent with the time for controlling the glasses driving module to open the first lens;
the control module is further used for controlling each light-emitting element of the backlight module to be sequentially turned on from high to low according to the backlight average brightness of each block when the time for writing the first driving signal into the display panel reaches the preset time;
the control module is further used for adjusting the first driving current of each light-emitting element;
the signal driving module is also used for writing a second driving signal into the display panel; the glasses driving module is also used for controlling the opening of the second lens; the control module is also used for controlling the time for writing the second driving signal into the display panel by the signal driving module to be consistent with the time for controlling the second lens to be opened by the glasses driving module;
the control module is further configured to adjust a second drive current of each light emitting element.
4. The brightness adjustment system according to claim 3, further comprising a transmittance detector; the penetration rate detector is used for detecting the penetration rate of each block of the display panel along with the change of time and recording the response time of the penetration rate when the signal driving module writes a first driving signal into the display panel, the glasses driving module controls the first lens to be started and the control module controls each light-emitting element of the backlight module to be started; the penetration rate detector is also used for transmitting the penetration rate and the response time to the control module; the control module is further used for comparing the penetration rate to obtain the preset time according to the response time.
5. The system of claim 3, wherein the plurality of light-emitting elements constitute a backlight source, the backlight source is a lateral light source, and the lateral light source comprises a single-sided lateral light source and a double-sided lateral light source; when the lateral light source is a single-side lateral light source, the number of the light-emitting elements is N, the blocks correspond to the light-emitting elements one by one, and each light-emitting element is used for lighting a corresponding block; when the lateral light source is a bilateral lateral light source, the number of the light-emitting elements is 2N, every two light-emitting elements correspond to one block, and every two light-emitting elements light up one corresponding block.
6. A display system comprising a display panel and the brightness adjustment system of any one of claims 3 to 5.
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| CN201811320794.4A CN109243381B (en) | 2018-11-07 | 2018-11-07 | Brightness adjusting method and system of display system and display system |
| PCT/CN2018/122271 WO2020093543A1 (en) | 2018-11-07 | 2018-12-20 | Brightness adjustment method for display system, brightness adjustment system, and display system |
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| CN201811320794.4A CN109243381B (en) | 2018-11-07 | 2018-11-07 | Brightness adjusting method and system of display system and display system |
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| CN114627823B (en) * | 2020-12-11 | 2024-06-04 | 纬联电子科技(中山)有限公司 | Liquid crystal display and picture display method |
| CN112908228B (en) * | 2021-01-28 | 2023-12-01 | Oppo广东移动通信有限公司 | Display brightness adjusting method and device, head-mounted display device and storage medium |
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| WO2020093543A1 (en) | 2020-05-14 |
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