CN111240057A - Error compensation equipment and error compensation method - Google Patents
Error compensation equipment and error compensation method Download PDFInfo
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- CN111240057A CN111240057A CN202010113624.XA CN202010113624A CN111240057A CN 111240057 A CN111240057 A CN 111240057A CN 202010113624 A CN202010113624 A CN 202010113624A CN 111240057 A CN111240057 A CN 111240057A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—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
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
Abstract
The application discloses error compensation equipment and an error compensation method, the error compensation equipment is used for aligning and laminating a display panel and comprises a register, a pattern generator, a sensor and an address burner. The pixel brightness control method comprises the steps of giving a coordinate to each pixel in the first substrate and the second substrate, lighting a plurality of pixels in the first substrate and the second substrate to generate a first graphic sign and a second graphic sign, calculating a coordinate position of one point in the first graphic sign and a position difference value of a corresponding point in the second graphic sign, compensating, avoiding deviation caused by full lamination, and enabling the pixel brightness control to be more accurate.
Description
Technical Field
The application relates to the field of mobile display panel lamination, in particular to error compensation equipment and an error compensation method.
Background
With the continuous improvement of the film viewing experience of consumers, the requirement of Dynamic contrast (High-Dynamic Range, HDR) is more and more obvious, as a Liquid Crystal Display (LCD), because of the backlight factor, the contrast cannot reach the OLED standard, and the backlight light control cannot reach the pixel level, in order to enable the LCD to compare the contrast of the OLED and the light control effect of the pixel level, the LCD displays and develops a dual OC laminating mode, and the OC is adopted to control the brightness of the pixel level, so that the LCD product also has the Dynamic contrast specification of the OLED product at the same level.
In order to accurately control the brightness of a pixel level, the requirement of the lamination alignment precision of the double OC is less than or equal to 100um, but the requirement cannot be met at all by the existing large-size full lamination equipment and process.
Therefore, there is a need to develop a new error compensation device to overcome the drawbacks of the prior art.
Disclosure of Invention
The invention aims to provide error compensation equipment which can solve the problem that large-size full-lamination equipment and process in the prior art cannot meet the requirement that the lamination alignment precision of double OC is less than or equal to 100 um.
In order to achieve the above object, the present invention provides an error compensation device for aligning and bonding a display panel, comprising a register storing an initial coordinate of each pixel in a first substrate and an initial coordinate of each pixel in a second substrate, wherein the initial coordinate of each pixel in the first substrate corresponds to the initial coordinate of a pixel in the second substrate; the pattern generator is used for lightening a plurality of pixels in the first substrate to generate a first pattern mark; lighting a plurality of pixels corresponding to the first substrate in the second substrate to generate a second graphic sign; the sensor is used for detecting the coordinate position of any point in the first graphic mark and the coordinate position of a corresponding point in the second graphic mark when the first substrate and the second substrate are mutually attached, and calculating the difference value between the coordinate position of the point in the first graphic mark and the position of the corresponding point in the second graphic mark; and the address burner is used for reallocating the coordinates of each pixel in the second substrate according to the position difference value, enabling the coordinates of each pixel in the second substrate to correspond to the initial coordinates of each pixel in the first substrate again, and updating the reallocated coordinates of each pixel in the second substrate to the register.
The first substrate and the second substrate are endowed with a coordinate, a plurality of pixels in the first substrate and the second substrate are lightened to generate a first graphic sign and a second graphic sign, the coordinate position of one point in the first graphic sign and the position difference value of the corresponding point in the second graphic sign are calculated and compensated, the deviation caused by full lamination can be avoided, and the brightness control of the pixel level is more accurate.
Further, in other embodiments, the first and second graphical indicia are cross-hair intersections or square dots or frame-shaped dots.
Further, in other embodiments, the display area of the second substrate is larger than the display area of the first substrate. The second substrate has a light valve function, the first substrate has a display function, the area of a display area of the second substrate is larger than that of the first substrate, and the phenomenon that the edge of the first substrate cannot be displayed after the second substrate is attached and displaced can be avoided.
Further, in other embodiments, the initial coordinates of each corresponding pixel in the first and second substrates include X-axis coordinates and Y-axis coordinates, and the X-axis coordinates and the Y-axis coordinates form a two-dimensional vertical coordinate system.
In order to achieve the above object, the present invention further provides an error compensation method, including the steps of: providing the error compensation device and a first substrate and a second substrate, wherein each pixel in the first substrate and each pixel in the second substrate correspond to each other; establishing a coordinate system: establishing a coordinate system, giving a coordinate to each pixel in the first substrate, and giving a coordinate to each pixel in the second substrate; a substrate bonding step: attaching the first substrate to the second substrate; a graphic mark generation step: lightening a plurality of pixels in the first substrate to generate a first graphic sign; lighting a plurality of pixels corresponding to the first substrate in the second substrate to generate a second graphic sign; detecting the graphic signs: detecting the coordinate position of any point in the first graphic mark and the coordinate position of a corresponding point in the second graphic mark, and calculating the difference value between the coordinate position of the point in the first graphic mark and the position of the corresponding point in the second graphic mark; and (3) updating coordinates: and reallocating the coordinates of each pixel in the second substrate according to the position difference value, enabling the coordinates of each pixel in the second substrate to correspond to the initial coordinates of each pixel in the first substrate again, and updating the reallocated coordinates of each pixel in the second substrate.
Further, in another embodiment, the coordinate updating step includes determining whether the position difference is 0, if so, determining that the coordinate position of any one point in the first graphic mark coincides with the coordinate mark of the corresponding point in the second graphic mark, if not, reallocating the coordinates of the pixels in the second substrate according to the position difference, and returning to the graphic mark generating step until the position difference is 0.
Further, in other embodiments, the establishing the coordinate system step includes establishing a two-dimensional vertical coordinate system having X-axis coordinates and Y-axis coordinates, where coordinates of an nth pixel in the first substrate are represented by (Xn, Yn), and coordinates of an mth pixel in the second substrate are represented by (Xm, Ym).
Further, in another embodiment, in the graphic mark detecting step, a difference value between a coordinate of an nth pixel in the first substrate and a coordinate of a corresponding mth pixel in the second substrate is (Xn-Xm, Yn-Ym).
Further, in another embodiment, the step of calculating the difference value of the position includes capturing three first substrates and corresponding positions to the second substrate, calculating a difference value of each corresponding position in an X-axis coordinate, calculating an average value of the difference values of the three X-axis coordinates, calculating a difference value of each corresponding position in a Y-axis coordinate, calculating an average value of the difference values of the three Y-axis coordinates, and taking the average value of the difference values of the X-axis coordinates and the average value of the difference values of the Y-axis coordinates as the actual difference value of the position.
Further, in other embodiments, the first and second graphical indicia are cross-hair intersections or square dots or frame-shaped dots.
Further, in other embodiments, the display area of the second substrate is larger than the display area of the first substrate.
Compared with the prior art, the invention has the beneficial effects that: the invention provides error compensation equipment and an error compensation method, wherein each pixel in a first substrate and a second substrate is endowed with a coordinate, a plurality of pixels in the first substrate and the second substrate are lightened to generate a first graphic mark and a second graphic mark, the coordinate position of one point in the first graphic mark and the position difference value of the corresponding point in the second graphic mark are calculated and compensated, the deviation caused by full lamination can be avoided, and the brightness control of a pixel level is more accurate.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an error compensation apparatus according to an embodiment of the present invention;
fig. 2 is a flowchart of an error compensation method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an error compensation device for aligning and bonding a display panel, the error compensation device including a register, a pattern generator, a sensor and an address writer.
The register stores the initial coordinate of each pixel in the first substrate and the initial coordinate of each pixel in the second substrate, and the initial coordinate of each pixel in the first substrate corresponds to the initial coordinate of a pixel in the second substrate.
The display area of the second substrate is larger than that of the first substrate, the second substrate has a light valve function, the first substrate has a display function, the display area of the second substrate is larger than that of the first substrate, and therefore the phenomenon that the edge of the first substrate cannot be displayed after the second substrate is attached and displaced can be avoided.
The initial coordinates of each corresponding pixel in the first substrate and the second substrate comprise X-axis coordinates and Y-axis coordinates, and the X-axis coordinates and the Y-axis coordinates form a two-dimensional vertical coordinate system.
The pattern generator is used for lightening a plurality of pixels in the first substrate to generate a first pattern mark; lighting a plurality of pixels corresponding to the first substrate in the second substrate to generate a second graphic sign; wherein the first graphic mark and the second graphic mark are cross line intersection points or square points or frame-shaped points.
And the sensor is used for detecting the coordinate position of any point in the first graphic mark and the coordinate position of a corresponding point in the second graphic mark when the first substrate and the second substrate are mutually attached, and calculating the position difference value between the coordinate position of the point in the first graphic mark and the corresponding point in the second graphic mark.
And the address burner is used for reallocating the coordinates of each pixel in the second substrate according to the position difference value, enabling the coordinates of each pixel in the second substrate to correspond to the initial coordinates of each pixel in the first substrate again, and updating the reallocated coordinates of each pixel in the second substrate to the register.
The first substrate and the second substrate are endowed with a coordinate, a plurality of pixels in the first substrate and the second substrate are lightened to generate a first graphic sign and a second graphic sign, the coordinate position of one point in the first graphic sign and the position difference value of the corresponding point in the second graphic sign are calculated and compensated, the deviation caused by full lamination can be avoided, and the brightness control of the pixel level is more accurate.
Referring to fig. 2, fig. 2 is a flowchart illustrating an error compensation method according to the present embodiment, where the error compensation method includes steps S1-S6.
Step S1: the error compensation apparatus according to the present embodiment is provided with a first substrate and a second substrate, each pixel in the first substrate and each pixel in the second substrate correspond to each other.
The display area of the second substrate is larger than that of the first substrate, the second substrate has a light valve function, the first substrate has a display function, the display area of the second substrate is larger than that of the first substrate, and therefore the phenomenon that the edge of the first substrate cannot be displayed after the second substrate is attached and displaced can be avoided.
Step S2: establishing a coordinate system: and establishing a coordinate system, giving a coordinate to each pixel in the first substrate, and giving a coordinate to each pixel in the second substrate.
Wherein in the step of establishing a coordinate system, a two-dimensional vertical coordinate system having an X-axis coordinate and a Y-axis coordinate is established, the coordinate of the nth pixel in the first substrate is represented as (Xn, Yn), and the coordinate of the mth pixel in the second substrate is represented as (Xm, Ym).
Step S3: a substrate bonding step: and attaching the first substrate to the second substrate.
Step S4: a graphic mark generation step: lightening a plurality of pixels in the first substrate to generate a first graphic sign; and lightening a plurality of pixels corresponding to the first substrate in the second substrate to generate a second graphic sign.
Wherein the first graphic mark and the second graphic mark are cross line intersection points or square points or frame-shaped points.
Step S5: detecting the graphic signs: and detecting the coordinate position of any point in the first graphic mark and the coordinate position of a corresponding point in the second graphic mark, and calculating the difference value between the coordinate position of the point in the first graphic mark and the position of the corresponding point in the second graphic mark.
Wherein in the graphic symbol detection step, a difference value between the coordinates of the nth pixel in the first substrate and the coordinates of the corresponding mth pixel in the second substrate is (Xn-Xm, Yn-Ym).
In the step of calculating the position difference, three first substrates and the corresponding positions of the second substrates are captured, the difference of each corresponding position in the X-axis coordinate is calculated, the average value of the differences of the three X-axis coordinates is calculated, the difference of each corresponding position in the Y-axis coordinate is calculated, the average value of the differences of the three Y-axis coordinates is calculated, and the average value of the differences of the X-axis coordinates and the average value of the differences of the Y-axis coordinates are used as the actual position difference.
Step S6: and (3) updating coordinates: and reallocating the coordinates of each pixel in the second substrate according to the position difference value, enabling the coordinates of each pixel in the second substrate to correspond to the initial coordinates of each pixel in the first substrate again, and updating the reallocated coordinates of each pixel in the second substrate.
And in the coordinate updating step, judging whether the position difference value is 0, if so, judging that the coordinate position of any point in the first graphic mark is superposed with the coordinate mark of the corresponding point in the second graphic mark, otherwise, redistributing the coordinates of the pixels in the second substrate according to the position difference value, and returning to the graphic mark generating step until the position difference value is 0.
The invention has the beneficial effects that: the invention provides error compensation equipment and an error compensation method, wherein each pixel in a first substrate and a second substrate is endowed with a coordinate, a plurality of pixels in the first substrate and the second substrate are lightened to generate a first graphic mark and a second graphic mark, the coordinate position of one point in the first graphic mark and the position difference value of the corresponding point in the second graphic mark are calculated and compensated, the deviation caused by full lamination can be avoided, and the brightness control of a pixel level is more accurate.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The error compensation device and the error compensation method provided by the embodiment of the present application are introduced in detail, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the embodiment is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. An error compensation device for aligning and attaching a display panel, comprising
The register stores the initial coordinate of each pixel in the first substrate and the initial coordinate of each pixel in the second substrate, and the initial coordinate of each pixel in the first substrate corresponds to the initial coordinate of a pixel in the second substrate;
the pattern generator is used for lightening a plurality of pixels in the first substrate to generate a first pattern mark; lighting a plurality of pixels corresponding to the first substrate in the second substrate to generate a second graphic sign;
the sensor is used for detecting the coordinate position of any point in the first graphic mark and the coordinate position of a corresponding point in the second graphic mark when the first substrate and the second substrate are mutually attached, and calculating the difference value between the coordinate position of the point in the first graphic mark and the position of the corresponding point in the second graphic mark;
and the address burner is used for reallocating the coordinates of each pixel in the second substrate according to the position difference value, enabling the coordinates of each pixel in the second substrate to correspond to the initial coordinates of each pixel in the first substrate again, and updating the reallocated coordinates of each pixel in the second substrate to the register.
2. The error compensation apparatus of claim 1, wherein the first and second graphical indicia are cross hair intersections or square dots or box dots.
3. The error compensation apparatus of claim 1, wherein a display area of the second substrate is larger than a display area of the first substrate.
4. The error compensation apparatus of claim 1, wherein the initial coordinates of each corresponding pixel in the first and second substrates comprise X-axis coordinates and Y-axis coordinates, the X-axis coordinates and Y-axis coordinates constituting a two-dimensional vertical coordinate system.
5. An error compensation method, characterized by comprising the steps of:
providing the error compensation apparatus of claim 1 and first and second substrates, each pixel in the first substrate and each pixel in the second substrate corresponding to each other;
establishing a coordinate system: establishing a coordinate system, giving a coordinate to each pixel in the first substrate, and giving a coordinate to each pixel in the second substrate;
a substrate bonding step: attaching the first substrate to the second substrate;
a graphic mark generation step: lightening a plurality of pixels in the first substrate to generate a first graphic sign; lighting a plurality of pixels corresponding to the first substrate in the second substrate to generate a second graphic sign;
detecting the graphic signs: detecting the coordinate position of any point in the first graphic mark and the coordinate position of a corresponding point in the second graphic mark, and calculating the difference value between the coordinate position of the point in the first graphic mark and the position of the corresponding point in the second graphic mark;
and (3) updating coordinates: and reallocating the coordinates of each pixel in the second substrate according to the position difference value, enabling the coordinates of each pixel in the second substrate to correspond to the initial coordinates of each pixel in the first substrate again, and updating the reallocated coordinates of each pixel in the second substrate.
6. The error compensation method of claim 5, wherein in the coordinate updating step, comprising
And judging whether the position difference value is 0, if so, judging that the coordinate position of any point in the first graphic mark is superposed with the coordinate mark of the corresponding point in the second graphic mark, otherwise, redistributing the coordinates of the pixels in the second substrate according to the position difference value, and returning to the graphic mark generating step until the position difference value is 0.
7. The error compensation method of claim 5, wherein the step of establishing a coordinate system includes establishing a two-dimensional vertical coordinate system having X-axis coordinates and Y-axis coordinates, the coordinates of an nth pixel in the first substrate being represented as (Xn, Yn), and the coordinates of an mth pixel in the second substrate being represented as (Xm, Ym).
8. The error compensation method according to claim 7, wherein in the graphic symbol detection step, a difference between coordinates of an nth pixel in the first substrate and coordinates of a corresponding nth pixel in the second substrate is (Xn-Xm, Yn-Ym).
9. The error compensation method of claim 8, wherein in the step of calculating the position difference, comprises
The method comprises the steps of grabbing three first substrates and corresponding positions of the first substrates and the second substrates, calculating difference values of the corresponding positions in X-axis coordinates, calculating an average value of the difference values of the three X-axis coordinates, calculating difference values of the corresponding positions in Y-axis coordinates, calculating an average value of the difference values of the three Y-axis coordinates, and taking the average value of the difference values of the X-axis coordinates and the average value of the difference values of the Y-axis coordinates as actual position difference values.
10. The error compensation method of claim 5, wherein the first and second graphical indicia are cross-hair intersections or square dots or box dots.
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