CN111045234A - Intelligent device for monitoring display effect of transparent liquid crystal screen and detection method - Google Patents
Intelligent device for monitoring display effect of transparent liquid crystal screen and detection method Download PDFInfo
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- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Abstract
The invention provides intelligent equipment for monitoring the display effect of a transparent liquid crystal screen and a detection method, wherein the intelligent equipment comprises a darkroom, wherein a production line, a background liquid crystal display screen, a computer and a test camera are arranged in the darkroom, the background liquid crystal display screen is arranged on one side of the production line, the test camera is arranged on the other side of the production line, the computer is arranged beside the test camera, the transparent liquid crystal screen to be tested is driven by the production line to move, a transparent screen display driving device is arranged beside the test camera, and the transparent liquid crystal screen to be tested is driven by the transparent screen display driving device. Through the intelligent equipment and the detection method, the full-screen detection of the full-screen of the transparent liquid crystal screen to be detected can be realized, the definition of each position of the transparent liquid crystal screen to be detected under different brightness conditions can be realized, the full-automatic execution can be realized, the assembly line can be quickly and completely detected, and the innovation can be realized on the content and the engineering.
Description
Technical Field
The invention relates to the field of transparent liquid crystal display production, in particular to intelligent equipment and a detection method for monitoring the display effect of a transparent liquid crystal display.
Background
In 12 months in 2012, at the IEC/TC110 working group conference held in kyoto, japan, a representative of china proposed to establish an international standard of "transparent liquid crystal display optical test method", and through discussion in two years, in 11 months in 2014, the representative proposed to apply a new working project by working group voting at the IEC/TC110 working group conference held in tokyo, japan agreed to be formally proposed by the national committee of china. The proposal plays an important role in perfecting the international standard system of transparent display and promoting the development of the transparent display industry in China. In the proposal, the definition is mainly used for measuring the degree of geometric distortion of the object behind the transparent liquid crystal display screen, namely the definition of the object behind the transparent liquid crystal display screen under the graphic display state. In the proposal, a standard light source box is built, a standard reference object is arranged in a box body, a transparent display screen is arranged in front of the reference object, and the illusion degree of the reference object is respectively tested under the states of the transparent screen and the non-transparent screen, so that the definition of the transparent display screen is measured.
In the proposed method for definition specification, a drawback is faced, namely that the method does not take into account that the definition is a problem of varying non-linearity from the central point to the peripheral edges of the transparent screen, and not an overall uniform result. However, in order to finely control the quality of the product, it is necessary to know the definition of each position of the entire surface, and to make further detailed modification possible.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide intelligent equipment and a detection method for monitoring the display effect of a transparent liquid crystal screen, which can detect the definition of the transparent liquid crystal screen to be detected at each position and under different brightness conditions in a full screen mode, can be executed in a full automatic mode, can realize the fast full detection of a production line, and further realize innovation in content and engineering.
The invention provides intelligent equipment for monitoring the display effect of a transparent liquid crystal screen, which comprises a darkroom, wherein a production line, a background liquid crystal display screen, a computer and a test camera are arranged in the darkroom, the background liquid crystal display screen is arranged on one side of the production line, the test camera is arranged on the other side of the production line, the computer is arranged beside the test camera, the transparent liquid crystal screen to be tested is driven by the production line to move, a transparent screen display driving device is arranged beside the test camera, and the transparent liquid crystal screen to be tested is driven by the transparent screen display driving device.
The further improvement lies in that: the label is pasted on the transparent liquid crystal screen to be tested, and the serial number of the liquid crystal screen is distinguished by collecting and identifying the label through the testing camera.
The further improvement lies in that: and an acousto-optic prompt system is arranged beside the test camera, and is used for prompting the operation condition of an operator and giving an alarm on an abnormal condition.
The further improvement lies in that: and the assembly line is provided with a clamp, and the transparent liquid crystal screen to be tested is clamped by the clamp.
The invention also provides a detection method for monitoring the display effect of the transparent liquid crystal screen, which comprises the following steps:
the method comprises the following steps: setting the position of the center of a lens of a test camera to be vertical to the center of a transparent liquid crystal screen to be tested, wherein the imaging range of the test camera comprises the display range of the transparent liquid crystal screen to be tested; then, placing the edge position of the background liquid crystal screen on the extension line of the center of the lens of the testing camera and the edge position of the transparent liquid crystal screen to be tested;
step two: the computer controls the background liquid crystal display screen to display stripes with different widths, straight stripes with the same width in the transverse direction and the longitudinal direction, black and white, and the like, and the straight stripes are directly shot by the test camera and sent to the computer for analyzing parameters;
step three: divide the image from left to right and from top to bottom into 5 groups of black and white longitudinal and transverse stripes as small units
The parameters of the region are calculated, and the parameters comprise:
，
wherein:
representing coordinates
Influence factors of the liquid crystal screen to be tested do not exist transversely at the central point of the unit cell;
representing coordinates
Influence factors of the liquid crystal screen to be detected do not exist in the longitudinal direction of the central point of the unit cell;
the width of the white vertical bar is measured in the test camera when the transparent liquid crystal screen to be tested does not exist, wherein 1 represents the result of the direct test of the transparent liquid crystal screen to be tested,lthe vertical stripe is represented by w, the white stripe is represented by w, and the ith stripe is represented by i;
the width of the black vertical bar is measured in the test camera when the transparent liquid crystal screen to be tested does not exist, wherein 1 represents the result of the direct test of the transparent liquid crystal screen to be tested,lthe vertical stripe is represented, the black stripe is represented by b, and the ith stripe is represented by i;
measuring the width of the white horizontal bar in a test camera when the transparent liquid crystal screen to be tested does not exist; wherein 1 represents the result of direct test of the transparent liquid crystal screen without test,vthe representation is a transverse stripe, w represents a white stripe, and i represents the ith stripe;
measuring the width of the black horizontal bar in a test camera when the transparent liquid crystal screen to be tested does not exist; wherein 1 represents the result of direct test of the transparent liquid crystal screen without test,vthe representation is a transverse stripe, the representation b is a black stripe, and the representation i is an ith stripe;
the number of groups of black and white vertical and horizontal stripes in a small unit;Dis the actual width of the black and white stripes, whose value is derived from the physical size of the background liquid crystal display, falseIf the physical size between the liquid crystal dots of the background liquid crystal screen is D, the D is equal to 5D;
step four: through the assembly line movement, the transparent liquid crystal screen to be detected is placed at the position to be detected, the brightness tl of the transparent liquid crystal screen to be detected is adjusted from 0 to 255, the mixed pattern of the background liquid crystal display screen and the transparent liquid crystal screen to be detected is shot, the effect of the mixed pattern under different brightness conditions is detected, and the image is divided into 5 groups of black-white longitudinal and transverse stripes from left to right and from top to bottom to be small units
The parameters of which are calculated, wherein the parameters comprise:
，
wherein
Representing coordinates
The brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255) in the transverse direction of the center point of the cell, and influence factors of the liquid crystal screen to be tested exist;
representing coordinates
The brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255) in the longitudinal direction of the central point of the cell, and influence factors of the liquid crystal screen to be tested exist;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), the width of the white vertical bar is measured in a test camera, wherein 2 represents the storageThe result of direct test on the transparent liquid crystal screen to be tested,lthe representation is a longitudinal stripe which is,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), w represents a white stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), the width of the black vertical bar is measured in a test camera, wherein 2 represents the result of direct test of the transparent liquid crystal screen to be tested,lthe representation is a longitudinal stripe which is,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), b represents a black stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), and the width of a white horizontal bar is measured in a testing camera; wherein 2 represents the result of the direct test of the existence of the transparent liquid crystal screen to be tested,vwhat is represented is a lateral stripe,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), w represents a white stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), and the width of the black horizontal bar is measured in a test camera; wherein 2 represents the result of the direct test of the existence of the transparent liquid crystal screen to be tested,vwhat is represented is a lateral stripe,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), b represents a black stripe, and i represents the ith stripe;
the number of groups of black and white vertical and horizontal stripes in a small unit;Dis the actual width of the black and white stripes, and its value is derived from the physical size of the background liquid crystal display screen, assuming that the background liquid crystal display screen has liquid crystal dots between the liquid crystal dotsD, then this D equals 5D;
step five: calculated at different coordinates (xx,yy) Different brightnesstlhHorizontal and vertical definition of center point under the conditions:
，
obtaining a numerical value as a result;
step six: and storing data, and corresponding the result with the label, so that the historical calling is facilitated for further analysis.
The further improvement lies in that: and in the first step, the area of the transparent liquid crystal screen to be tested is imaged greatly in the imaging range of the testing camera.
The further improvement lies in that: in the second step, the horizontal stripes are sequentially 5 pixels which are white, 5 pixels which are black and the last pixels which are less than 5 are displayed as white from top to bottom; the longitudinal stripes are sequentially 5 pixels white, 5 pixels black and the last few pixels less than 5 white from left to right.
The darkroom is used for placing parts such as a production line, a label, a background liquid crystal display screen, a transparent liquid crystal screen to be tested, a transparent screen display driver, a testing camera, a computer and the like and isolating the influence of external light on the testing.
The assembly line is used for hanging the transparent liquid crystal screen to be tested by using the clamp, then moving to a specified position under the control of a computer, namely stopping between the background liquid crystal screen and the testing camera, and waiting for detection.
The computer is used for controlling the assembly line to carry the transparent liquid crystal screen to be tested to move to a specified position; the label acquisition module is used for acquiring a label acquired by the test camera; the device is used for controlling the background liquid crystal display screen to display different patterns in a changing way; the display driver is used for controlling the display driver of the transparent screen so as to drive the display of the transparent liquid crystal screen to be detected; the method is used for obtaining the effect of the transparent liquid crystal display by using the test camera.
The label is used for being attached to the transparent liquid crystal screen to be tested by an operator, being collected and identified by the test camera and being used for distinguishing the serial number of the liquid crystal screen.
The background liquid crystal display screen is used for displaying patterns with specified brightness and specified content under the control of a computer, and the patterns are used as background light, penetrate through the transparent liquid crystal screen to be tested, are superposed with the content displayed by the transparent liquid crystal screen to be tested, are shot by the test camera and are sent to the computer for analysis.
The transparent liquid crystal screen to be tested is the transparent liquid crystal screen to be tested, and the transparent liquid crystal screen to be tested is hung on a production line by clamps in batches.
The transparent screen display driver is placed by an operator after entering a darkroom and is used for driving the display of the transparent liquid crystal screen to be detected under the control of a computer so as to facilitate detection.
The test camera is used for shooting the self pattern of the background liquid crystal display screen and the pattern mixed with the transparent liquid crystal display screen, and sending the pattern and the pattern to a computer for analysis.
The sound and light prompt system is used for prompting the operation condition of an operator and giving an alarm in an abnormal condition.
The emergency button is used for pressing by an operator to suspend the process under an abnormal condition.
The invention has the beneficial effects that: through the intelligent equipment and the detection method, the full-screen detection of the full-screen of the transparent liquid crystal screen to be detected can be realized, the definition of each position of the transparent liquid crystal screen to be detected under different brightness conditions can be realized, the full-automatic execution can be realized, the assembly line can be quickly and completely detected, and the innovation can be realized on the content and the engineering.
Drawings
Fig. 1 is a mechanical structure diagram of the present invention.
FIG. 2 is a schematic diagram showing the relationship between a background LCD, a transparent LCD to be tested, and a testing camera according to the present invention.
FIG. 3 is a horizontal stripe case of the background LCD panel display of the present invention.
Fig. 4 is a vertical stripe case of the background liquid crystal display of the present invention.
Fig. 5 is a schematic diagram of the circuit structure of the present invention.
FIG. 6 is an algorithm flow diagram of the present invention.
Wherein: the method comprises the following steps of 1-darkroom, 2-assembly line, 3-background liquid crystal display screen, 4-computer, 5-testing camera, 6-transparent liquid crystal screen to be tested, 7-transparent screen display driving device, 8-label, 9-acousto-optic prompt system and 10-clamp.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
This embodiment provides an intelligent equipment for monitoring of transparent LCD screen display effect, including darkroom 1, be provided with assembly line 2, background liquid crystal display 3, computer 4 and test camera 5 in the darkroom 1, background liquid crystal display 3 sets up in one side of assembly line 2, and test camera 5 sets up the opposite side at assembly line 2, computer 4 sets up by test camera 5, and the transparent LCD screen 6 that awaits measuring drives through assembly line 2 and removes, test camera 5 is other to be provided with transparent screen display drive arrangement 7, drives transparent LCD screen 6 that awaits measuring through transparent screen display drive arrangement 7.
The further improvement lies in that: and a label 8 is pasted on the transparent liquid crystal screen 6 to be tested, and the identification label 8 is acquired through the test camera 5 to distinguish the serial number of the liquid crystal screen.
The further improvement lies in that: an acousto-optic prompt system 9 is arranged beside the test camera 5, and the acousto-optic prompt system 9 is used for prompting the operation condition of an operator and giving an alarm on abnormal conditions.
The further improvement lies in that: the assembly line 2 is provided with a clamp 10, and the transparent liquid crystal screen 6 to be tested is clamped through the clamp 10.
The embodiment also provides a detection method for monitoring the display effect of the transparent liquid crystal display, which comprises the following steps:
the method comprises the following steps: setting the position of the center of a lens of a test camera to be vertical to the center of a transparent liquid crystal screen to be tested, wherein the imaging range of the test camera comprises the display range of the transparent liquid crystal screen to be tested; then, placing the edge position of the background liquid crystal screen on the extension line of the center of the lens of the testing camera and the edge position of the transparent liquid crystal screen to be tested;
step two: the computer controls the background liquid crystal display screen to display stripes with different widths, straight stripes with the same width in the transverse direction and the longitudinal direction, black and white, and the like, and the straight stripes are directly shot by the test camera and sent to the computer for analyzing parameters;
step three: divide the image from left to right and from top to bottom into 5 groups of black and white longitudinal and transverse stripes as small units
The parameters of the region are calculated, and the parameters comprise:
，
wherein:
representing coordinates
Influence factors of the liquid crystal screen to be tested do not exist transversely at the central point of the unit cell;
representing coordinates
Influence factors of the liquid crystal screen to be detected do not exist in the longitudinal direction of the central point of the unit cell;
the width of the white vertical bar is measured in the test camera when the transparent liquid crystal screen to be tested does not exist, wherein 1 represents the result of the direct test of the transparent liquid crystal screen to be tested,lthe vertical stripe is represented by w, the white stripe is represented by w, and the ith stripe is represented by i;
to be noWhen the transparent liquid crystal screen to be tested exists, the width of the black longitudinal bar is measured in the testing camera, wherein 1 represents the result of the direct test of the transparent liquid crystal screen without the test,lthe vertical stripe is represented, the black stripe is represented by b, and the ith stripe is represented by i;
measuring the width of the white horizontal bar in a test camera when the transparent liquid crystal screen to be tested does not exist; wherein 1 represents the result of direct test of the transparent liquid crystal screen without test,vthe representation is a transverse stripe, w represents a white stripe, and i represents the ith stripe;
measuring the width of the black horizontal bar in a test camera when the transparent liquid crystal screen to be tested does not exist; wherein 1 represents the result of direct test of the transparent liquid crystal screen without test,vthe representation is a transverse stripe, the representation b is a black stripe, and the representation i is an ith stripe;
the number of groups of black and white vertical and horizontal stripes in a small unit;Dthe actual width of the black and white stripes is derived from the physical size of the background liquid crystal display screen, and if the physical size between the liquid crystal dots of the background liquid crystal display screen is D, the D is equal to 5D;
step four: through the assembly line movement, the transparent liquid crystal screen to be detected is placed at the position to be detected, the brightness tl of the transparent liquid crystal screen to be detected is adjusted from 0 to 255, the mixed pattern of the background liquid crystal display screen and the transparent liquid crystal screen to be detected is shot, the effect of the mixed pattern under different brightness conditions is detected, and the image is divided into 5 groups of black-white longitudinal and transverse stripes from left to right and from top to bottom to be small units
The parameters of which are calculated, wherein the parameters comprise:
，
wherein
Representing coordinates
The brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255) in the transverse direction of the center point of the cell, and influence factors of the liquid crystal screen to be tested exist;
representing coordinates
The brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255) in the longitudinal direction of the central point of the cell, and influence factors of the liquid crystal screen to be tested exist;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), the width of a white longitudinal bar is measured in a test camera, wherein 2 represents the result of direct test of the transparent liquid crystal screen to be tested,lthe representation is a longitudinal stripe which is,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), w represents a white stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), the width of the black vertical bar is measured in a test camera, wherein 2 represents the result of direct test of the transparent liquid crystal screen to be tested,lthe representation is a longitudinal stripe which is,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), b represents a black stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), and the width of a white horizontal bar is measured in a testing camera; wherein 2 represents the result of the direct test of the existence of the transparent liquid crystal screen to be tested,vwhat is represented is a lateral stripe,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), w represents a white stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), and the width of the black horizontal bar is measured in a test camera; wherein 2 represents the result of the direct test of the existence of the transparent liquid crystal screen to be tested,vwhat is represented is a lateral stripe,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), b represents a black stripe, and i represents the ith stripe;
the number of groups of black and white vertical and horizontal stripes in a small unit;Dthe actual width of the black and white stripes is derived from the physical size of the background liquid crystal display screen, and if the physical size between the liquid crystal dots of the background liquid crystal display screen is D, the D is equal to 5D;
step five: calculated at different coordinates (xx,yy) Different brightnesstlhHorizontal and vertical definition of center point under the conditions:
，
obtaining a numerical value as a result;
step six: and storing data, and corresponding the result with the label, so that the historical calling is facilitated for further analysis.
And in the first step, the area of the transparent liquid crystal screen to be tested is imaged greatly in the imaging range of the testing camera. In the second step, the horizontal stripes are sequentially 5 pixels which are white, 5 pixels which are black and the last pixels which are less than 5 are displayed as white from top to bottom; the longitudinal stripes are sequentially 5 pixels white, 5 pixels black and the last few pixels less than 5 white from left to right. Through the intelligent equipment and the detection method, the full-screen detection of the full-screen of the transparent liquid crystal screen to be detected can be realized, the definition of each position of the transparent liquid crystal screen to be detected under different brightness conditions can be realized, the full-automatic execution can be realized, the assembly line can be quickly and completely detected, and the innovation can be realized on the content and the engineering.
Claims (7)
1. The utility model provides an intelligent equipment that is used for transparent LCD screen display effect to monitor which characterized in that: including darkroom (1), be provided with assembly line (2), background liquid crystal display (3), computer (4) and test camera (5) in darkroom (1), background liquid crystal display (3) set up in one side of assembly line (2), and test camera (5) set up the opposite side in assembly line (2), computer (4) set up by test camera (5), and transparent LCD screen (6) that awaits measuring drive through assembly line (2) and remove, test camera (5) are other to be provided with transparent screen display drive arrangement (7), drive transparent LCD screen (6) that await measuring through transparent screen display drive arrangement (7).
2. The intelligent device for monitoring the display effect of the transparent liquid crystal screen as claimed in claim 1, wherein: a label (8) is pasted on the transparent liquid crystal screen (6) to be tested, and the identification label (8) is collected through the test camera (5) to distinguish the serial number of the liquid crystal screen.
3. The intelligent device for monitoring the display effect of the transparent liquid crystal screen as claimed in claim 1, wherein: an acousto-optic prompt system (9) is arranged beside the test camera (5), and the acousto-optic prompt system (9) is used for prompting the operation condition of an operator and giving an alarm of an abnormal condition.
4. The intelligent device for monitoring the display effect of the transparent liquid crystal screen as claimed in claim 1, wherein: and the assembly line (2) is provided with a clamp (10), and the transparent liquid crystal screen (6) to be tested is clamped through the clamp (10).
5. A detection method for monitoring the display effect of a transparent liquid crystal screen according to any one of claims 1 to 4, characterized in that: the detection method comprises the following steps:
the method comprises the following steps: setting the position of the center of a lens of a test camera to be vertical to the center of a transparent liquid crystal screen to be tested, wherein the imaging range of the test camera comprises the display range of the transparent liquid crystal screen to be tested; then, placing the edge position of the background liquid crystal screen on the extension line of the center of the lens of the testing camera and the edge position of the transparent liquid crystal screen to be tested;
step two: the computer controls the background liquid crystal display screen to display stripes with different widths, straight stripes with the same width in the transverse direction and the longitudinal direction, black and white, and the like, and the straight stripes are directly shot by the test camera and sent to the computer for analyzing parameters;
step three: divide the image from left to right and from top to bottom into 5 groups of black and white longitudinal and transverse stripes as small units
The parameters of the region are calculated, and the parameters comprise:
，
wherein:
representing coordinates
Influence factors of the liquid crystal screen to be tested do not exist transversely at the central point of the unit cell;
representing coordinates
Influence factors of the liquid crystal screen to be detected do not exist in the longitudinal direction of the central point of the unit cell;
the width of the white vertical bar is measured in the test camera when the transparent liquid crystal screen to be tested does not exist, wherein 1 represents the result of the direct test of the transparent liquid crystal screen to be tested,lthe vertical stripe is represented by w, the white stripe is represented by w, and the ith stripe is represented by i;
the width of the black vertical bar is measured in the test camera when the transparent liquid crystal screen to be tested does not exist, wherein 1 represents the result of the direct test of the transparent liquid crystal screen to be tested,lthe vertical stripe is represented, the black stripe is represented by b, and the ith stripe is represented by i;
measuring the width of the white horizontal bar in a test camera when the transparent liquid crystal screen to be tested does not exist; wherein 1 represents the result of direct test of the transparent liquid crystal screen without test,vthe representation is a transverse stripe, w represents a white stripe, and i represents the ith stripe;
measuring the width of the black horizontal bar in a test camera when the transparent liquid crystal screen to be tested does not exist; wherein 1 represents the result of direct test of the transparent liquid crystal screen without test,vthe representation is a transverse stripe, the representation b is a black stripe, and the representation i is an ith stripe;
the number of groups of black and white vertical and horizontal stripes in a small unit;Dis black and whiteThe actual width of the fringe, whose value is derived from the physical size of the background liquid crystal display, assuming that the physical size between the liquid crystal dots of the background liquid crystal display is D, then this D is equal to 5D;
step four: through the assembly line movement, the transparent liquid crystal screen to be detected is placed at the position to be detected, the brightness tl of the transparent liquid crystal screen to be detected is adjusted from 0 to 255, the mixed pattern of the background liquid crystal display screen and the transparent liquid crystal screen to be detected is shot, the effect of the mixed pattern under different brightness conditions is detected, and the image is divided into 5 groups of black-white longitudinal and transverse stripes from left to right and from top to bottom to be small units
The parameters of which are calculated, wherein the parameters comprise:
，
wherein
Representing coordinates
The brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255) in the transverse direction of the center point of the cell, and influence factors of the liquid crystal screen to be tested exist;
representing coordinates
The brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255) in the longitudinal direction of the central point of the cell, and influence factors of the liquid crystal screen to be tested exist;
to storeWhen the transparent liquid crystal screen to be tested is used, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), the width of a white longitudinal bar is measured in a testing camera, wherein 2 represents the result of direct testing of the transparent liquid crystal screen to be tested,lthe representation is a longitudinal stripe which is,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), w represents a white stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), the width of the black vertical bar is measured in a test camera, wherein 2 represents the result of direct test of the transparent liquid crystal screen to be tested,lthe representation is a longitudinal stripe which is,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), b represents a black stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), and the width of a white horizontal bar is measured in a testing camera; wherein 2 represents the result of the direct test of the existence of the transparent liquid crystal screen to be tested,vwhat is represented is a lateral stripe,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), w represents a white stripe, and i represents the ith stripe;
when the transparent liquid crystal screen to be tested exists, the brightness tl of the transparent liquid crystal screen to be tested is tlh (tlh = 0-255), and the width of the black horizontal bar is measured in a test camera; wherein 2 represents the result of the direct test of the existence of the transparent liquid crystal screen to be tested,vwhat is represented is a lateral stripe,tlhthe brightness tl of the transparent liquid crystal screen to be detected is tlh (tlh = 0-255), b represents a black stripe, and i represents the ith stripe;
is smallThe number of groups of black and white longitudinal and transverse stripes in the unit;Dthe actual width of the black and white stripes is derived from the physical size of the background liquid crystal display screen, and if the physical size between the liquid crystal dots of the background liquid crystal display screen is D, the D is equal to 5D;
step five: calculated at different coordinates (xx,yy) Different brightnesstlhHorizontal and vertical definition of center point under the conditions:
，
obtaining a numerical value as a result;
step six: and storing data, and corresponding the result with the label, so that the historical calling is facilitated for further analysis.
6. The method as claimed in claim 5, wherein the method comprises the following steps: and in the first step, the area of the transparent liquid crystal screen to be tested is imaged greatly in the imaging range of the testing camera.
7. The method as claimed in claim 5, wherein the method comprises the following steps: in the second step, the horizontal stripes are sequentially 5 pixels which are white, 5 pixels which are black and the last pixels which are less than 5 are displayed as white from top to bottom; the longitudinal stripes are sequentially 5 pixels white, 5 pixels black and the last few pixels less than 5 white from left to right.
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| CN103900795A (en) * | 2014-02-20 | 2014-07-02 | 京东方科技集团股份有限公司 | Device and method for testing transparent effect of transparent display screen |
| CN104931238A (en) * | 2015-05-18 | 2015-09-23 | 京东方科技集团股份有限公司 | Device and method for testing transparent effect of transparent display substrate |
| CN107238484A (en) * | 2016-03-28 | 2017-10-10 | 京东方科技集团股份有限公司 | The detection method and detection means of transparent display screen definition |
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| CN103900795A (en) * | 2014-02-20 | 2014-07-02 | 京东方科技集团股份有限公司 | Device and method for testing transparent effect of transparent display screen |
| CN104931238A (en) * | 2015-05-18 | 2015-09-23 | 京东方科技集团股份有限公司 | Device and method for testing transparent effect of transparent display substrate |
| CN107238484A (en) * | 2016-03-28 | 2017-10-10 | 京东方科技集团股份有限公司 | The detection method and detection means of transparent display screen definition |
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