CN109166536B - 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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- CN109166536B CN109166536B CN201811320830.7A CN201811320830A CN109166536B CN 109166536 B CN109166536 B CN 109166536B CN 201811320830 A CN201811320830 A CN 201811320830A CN 109166536 B CN109166536 B CN 109166536B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000011521 glass Substances 0.000 claims abstract description 84
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000035515 penetration Effects 0.000 description 44
- 239000004973 liquid crystal related substance Substances 0.000 description 37
- 238000002834 transmittance Methods 0.000 description 36
- 238000010586 diagram Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
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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
- G09G3/3413—Details of control of colour illumination sources
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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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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; controlling the first lens and the backlight module to be started simultaneously, starting a plurality of light-emitting elements of the backlight module in sequence, and starting the first lens and the first started light-emitting element of the backlight module simultaneously; adjusting a first drive current of each light emitting element; writing a second driving signal into the display panel; controlling the second lens and the backlight module to be started simultaneously, starting a plurality of light-emitting elements of the backlight module in sequence, and starting the second lens and the first started light-emitting element of the backlight module simultaneously; 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;
controlling the first lens and the backlight module to be started simultaneously, wherein a plurality of light-emitting elements of the backlight module are started in sequence, and the first lens and the first started light-emitting element of the backlight module are started simultaneously;
adjusting a first drive current of each light emitting element;
writing a second driving signal into the display panel;
controlling the second lens and the backlight module to be started simultaneously, wherein a plurality of light-emitting elements of the backlight module are started in sequence, and the second lens and the first started light-emitting element of the backlight module are started simultaneously;
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 step of writing the first driving signal into the display panel comprises the 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;
the average backlight brightness of each block is sorted.
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 backlight module to be started; the control module is also used for controlling the first lens and the backlight module to be simultaneously started through the glasses driving module;
the first lens and the first started light-emitting element of the backlight module are started simultaneously;
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 used for controlling the second lens to be opened; the control module is also used for controlling the second lens and the backlight module to be simultaneously started through the glasses driving module;
the second lens and the first started light-emitting element of the backlight module are started simultaneously;
the control module is further configured to adjust a second drive current of each light emitting element.
In one embodiment, the control module is further configured to control an opening sequence of the corresponding light emitting elements according to the average backlight brightness of each block.
In one embodiment, the system further comprises 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 and the control module controls each light-emitting element of the backlight module to be sequentially started; the control module is also used for sequencing the average backlight brightness of each block.
In one embodiment, the plurality of light emitting elements form a backlight source, the backlight 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 to one, and each light emitting element is used for lighting a corresponding block.
In one embodiment, the plurality of light emitting elements form a backlight source, the backlight 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 block.
In one embodiment, the plurality of light emitting elements form a backlight source, the backlight source is a direct-type 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, the M light emitting elements in each row correspond to one block, and the M light emitting elements in each row illuminate the 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 driving signal is written into the display panel firstly, then the first lens and the backlight module are controlled to be started simultaneously, the response of the display panel reaches a stable and approximately equal penetration rate, and the penetration rate of each block of the display panel, the product of the penetration rate of glasses corresponding to each block and the average backlight brightness of each block of the display panel tend to be equal; and then, adjusting the driving current of each light-emitting element to further adjust the backlight average brightness of each block of the display panel, 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 backlight average 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 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 brightness adjusting method of the display system comprises the following steps:
in step S1, the first driving signal is written into the display panel.
In one display period, the driving signals include a first driving signal and a second driving signal. 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 embodiment, the glasses are 3D liquid crystal glasses, and the display panel is a 3D liquid crystal display panel.
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).
Step S2, the first lens and the backlight module are controlled to be turned on simultaneously, wherein the plurality of light emitting elements of the backlight module are turned on sequentially, and the first lens and the first turned-on light emitting element of the backlight module are turned on simultaneously.
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. Due to the physical characteristics of liquid crystal response, the display panel and the glasses need to be driven for a certain time to output a stable penetration rate, the time for the display panel to achieve the stable penetration rate output is not consistent with the time for the glasses to achieve the stable penetration rate output, and if the driving signals are written into the display panel and the glasses to be 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 average backlight brightness of each block of the display panel are different. Therefore, the penetration rates of the blocks of the display panel tend to be equal by adjusting the sequence of writing the driving signals into the display panel, opening the glasses and opening the backlight module, so that the penetration rate of each block of the display panel, the product of the penetration rate of the glasses corresponding to each block and the backlight average brightness of each block of the display panel tend to be equal, and the brightness of each block of the display panel penetrating 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.
According to the application, on the premise that the plurality of light-emitting elements of the backlight module are sequentially started, the driving signal is written into the display panel, then the first lens and the backlight module are controlled to be started simultaneously, the display panel has enough time response to achieve stable penetration rate which tends to be equal, and at the moment, the penetration rate of each block of the display panel, the penetration rate of glasses corresponding to each block and the product of the backlight average brightness of each block of the display panel tend to be 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 tends to be uniform.
It should be noted that, in one display period of the display panel, the first driving signal is written into the display panel, and the turn-on time of each light emitting element reaches the preset time and then is turned off.
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 small penetration rate in the initial stage of opening, and the penetration rate of the lens gradually increases and tends to be 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 liquid crystal glasses is uniform.
In step S5, the second driving signal is written into the display panel.
Step S6, the second lens and the backlight module are controlled to be turned on simultaneously, wherein the plurality of light emitting elements of the backlight module are turned on sequentially, and the second lens and the first turned on light emitting element of the backlight module are turned on simultaneously.
In step S7, the second driving current of each light emitting element is adjusted.
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.
It should be noted that, in one display period of the display panel, the second driving signal is written into the display panel, and the turn-on time of each light emitting element reaches the preset time and then is turned off.
In step S8, the turn-on sequence of the corresponding light emitting elements is controlled according to the average backlight brightness of each block.
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 to 7, by writing the driving signal into the display panel, and then controlling the first mirror and the backlight module to be turned on simultaneously, the display panel has enough time response to achieve a stable and approximately equal transmittance, and adjusts the driving current of each light emitting element, thereby adjusting 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 ', and the average brightness of the block BL2 is changed from BL _ ave _2 to BL _ ave _ L2'. 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 transmittance of the first lens corresponding to each light emitting element is L _ T _1, L _ T _2, …, and 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 tile of the display panel seen by the user through the first lens, that is, the luminance of each tile of the display panel through the first lens 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 lens has a second glasses transmittance R _ T _1, R _ T _2, …, R _ T _ N corresponding to each light emitting element. The second panel transmittance of each patch corresponding to the on-time of each light emitting element 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 '. ocl _ TR _2 '. OC _ TR _2 '. R _ T _2 ≈ … ≈ BL _ ave _ R N '. OC _ TR _ N '. R _ T _ N of each tile of the display panel seen by the user through the second mirror sheet, i.e., the luminance of each tile of the display panel through the second mirror sheet tends to be uniform.
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 in the process that the transmittance of the glasses gradually increases to be stable, the remaining light emitting elements are turned on in sequence from the highest to the lowest in the backlight average brightness of the corresponding blocks, as shown in fig. 8, 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, 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.
And writing the first driving signal into the display panel, controlling each light-emitting element of the backlight module to be sequentially started, and sequencing the backlight average brightness of each block by detecting the backlight average brightness of each block so as to obtain the high-low sequence of the backlight average brightness of each block.
To sum up, in the brightness adjustment method of the display system of the present application, on the premise that the plurality of light emitting elements of the backlight module are sequentially turned on, by writing the driving signal into the display panel, and then controlling the first lens and the backlight module to be turned on simultaneously, the response of the display panel reaches a stable and approximately equal transmittance, and the transmittance of each block of the display panel, the product of the transmittance of the glasses corresponding to each block and the average backlight brightness of each block of the display panel tend to be equal; and then, adjusting the driving current of each light-emitting element to further adjust the backlight average brightness of each block of the display panel, 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 backlight average 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. 11. It should be noted that, the brightness adjustment system shown in fig. 11 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. 11, 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 configured to control the first lens to be opened; the control module 30 is used for controlling the backlight module to be turned on. The control module 30 is further configured to control the first lens and the backlight module to be turned on simultaneously through the glasses driving module 20. The plurality of light emitting elements of the backlight module are sequentially turned on, and the first lens and the first turned-on light emitting element of the backlight module are turned on simultaneously. 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 used for controlling the second lens to open. The control module 30 is further configured to control the second lens and the backlight module to be turned on simultaneously through the glasses driving module 20. The plurality of light emitting elements of the backlight module are sequentially turned on, and the second lens and the first turned-on light emitting element of the backlight module are turned on simultaneously. 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 comprises a brightness detector 40. The brightness detector 40 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 the first driving signal into the display panel and the control module 30 controls each light emitting element of the backlight module to turn on in sequence. The control module 30 is further configured to sort the average backlight brightness of each block.
According to the brightness adjusting system, on the premise that the plurality of light emitting elements of the backlight module are sequentially started, the driving signals are written into the display panel firstly, then the first lens and the backlight module are controlled to be started simultaneously, the response of the display panel is stable and tends to equal penetration rate, and the penetration rate of each block of the display panel, the product of the penetration rate of glasses corresponding to each block and the average backlight brightness of each block of the display panel tend to be equal; and then, adjusting the driving current of each light-emitting element to further adjust the backlight average brightness of each block of the display panel, 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 backlight average 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.
An embodiment of the present application further provides a display system, which includes 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 (8)
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, and the backlight module comprises a plurality of light-emitting elements; 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;
controlling the first lens and the backlight module to be started simultaneously, wherein a plurality of light-emitting elements of the backlight module are started in sequence, and the first lens and the first started light-emitting element of the backlight module are started simultaneously;
adjusting a first drive current of each light emitting element;
controlling the starting sequence of the corresponding light-emitting elements according to the average backlight brightness of each block;
writing a second driving signal into the display panel;
controlling the second lens and the backlight module to be started simultaneously, wherein a plurality of light-emitting elements of the backlight module are started in sequence, and the second lens and the first started light-emitting element of the backlight module are started simultaneously;
adjusting a second drive current of each light emitting element;
and controlling the starting sequence of the corresponding light-emitting elements according to the average backlight brightness of each block.
2. The method of claim 1, wherein the step of writing the first driving signal to the display panel comprises the 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;
the average backlight brightness of each block is sorted.
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 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 backlight module to be started; the control module is also used for controlling the first lens and the backlight module to be simultaneously started through the glasses driving module;
the first lens and the first started light-emitting element of the backlight module are started simultaneously;
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 used for controlling the second lens to be opened; the control module is also used for controlling the second lens and the backlight module to be simultaneously started through the glasses driving module;
the second lens and the first started light-emitting element of the backlight module are started simultaneously;
the control module is further used for adjusting the second driving 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.
4. The brightness adjustment system according to claim 3, further comprising 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 and the control module controls each light-emitting element of the backlight module to be sequentially started; the control module is also used for sequencing the average backlight brightness of each block.
5. The system of claim 3, wherein the plurality of light emitting elements form a backlight source, the backlight source is a single-side edge type light source, the number of the light emitting elements is N, the blocks correspond to the light emitting elements one to one, and each light emitting element is configured to illuminate a corresponding block.
6. The system of claim 3, wherein the plurality of light emitting elements constitute a backlight source, the backlight source is a bilateral lateral light source, the number of the light emitting elements is 2N, each two light emitting elements correspond to one block, and each two light emitting elements illuminate a corresponding block.
7. A brightness adjusting system according to claim 3, wherein the plurality of light emitting elements constitute a backlight source, the backlight source is a direct-type light source, the number of light emitting elements is N × M, and the light emitting elements are arranged in a matrix of N rows and M columns, M light emitting elements in each row correspond to one block, and M light emitting elements in each row illuminate a corresponding block.
8. A display system comprising a display panel and the brightness adjustment system of any one of claims 3 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811320830.7A CN109166536B (en) | 2018-11-07 | 2018-11-07 | Brightness adjusting method and system of display system and display system |
| PCT/CN2018/123403 WO2020093557A1 (en) | 2018-11-07 | 2018-12-25 | Brightness adjustment method for display system, brightness adjustment system, and display system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811320830.7A CN109166536B (en) | 2018-11-07 | 2018-11-07 | Brightness adjusting method and system of display system and display system |
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| CN109166536A CN109166536A (en) | 2019-01-08 |
| CN109166536B true CN109166536B (en) | 2020-11-24 |
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| WO2020093557A1 (en) | 2020-05-14 |
| CN109166536A (en) | 2019-01-08 |
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