JP2015004727A - Display device and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device and a display method that can display images of high quality even when a display screen is warped.SOLUTION: A warpage degree detection part 20 detects warpage degrees of respective division parts, and a view angle calculation part 30 calculates view angles of the respective division parts based upon the warpage degrees. A variable power rate calculation part 31 calculates variable power rates by the division parts based upon the calculated view angles and stores the variable power rates in a variable power rate storage part 32. An image power variation part 33 performs power variation processing, based upon the variable power rates stored in the variable power rate storage part 32, on the respective division images divided by an image division part 34. An image after variation obtained by putting together the division images after the power variation processing is displayed on a display panel 2.

Description

  The present invention relates to a display device and a display method that are flexible and can display an image in a deformed state.

  Display devices such as liquid crystal display devices can be made larger, thinner, and lighter, not only as television receivers and computer monitors, but also as substitutes for bulletin boards, billboards, whiteboards, etc. It is increasingly installed in public facilities such as station buildings, schools, and hospitals.

  The display device can display moving images and multiple types of still images, and if it is an alternative to bulletin boards and advertising billboards, the image displayed can be changed according to time by setting image data in advance. Can be made. There is no need to replace the postings and advertisements, and effective display is possible with moving images.

  The display screen of the display device is usually flat and can hardly be deformed. Therefore, depending on the installation location, the display device must be installed with a part of the display device protruding. When installing in a place where many people come and go, the installation location is restricted so that people do not touch the display device, for example, it is installed at a height of several meters or installed on a large wall .

  In order to prevent the installation location from being restricted, a display device using a flexible substrate made of resin and having a curved display screen has been put into practical use. Since the display screen is curved, for example, by installing the screen so as to be curved along the surface of a columnar column or the like, there is no protruding portion at the time of installation, and the installation location is not restricted. In addition, the display screen can be curved to give the display device design.

  Since the display screen is curved, it has the above-mentioned advantages, but since the image to be displayed is assumed to be displayed on a flat screen, display quality, The display reliability is reduced.

  The display device described in Patent Document 1 detects a curved state of a substrate with a displacement sensor, and displays an image on a flat portion that is not curved when the curved state is detected.

JP 2011-118245 A

  When the image display device described in Patent Document 1 is attached to a columnar column or the like, the whole is curved, and thus there is no flat portion and an image cannot be displayed.

  There is no display device that can display an image in accordance with a curved display screen in order to eliminate restrictions on the installation location and ensure design.

  An object of the present invention is to provide a display device and a display method capable of displaying a high-quality image even when the display screen is curved.

The present invention is a flexible display panel having a display screen for displaying an image and comprising a plurality of virtual division parts divided by virtual division lines parallel to each other;
An image dividing unit that divides an image displayed on the display screen so as to correspond to each virtual divided portion;
A curvature detector that detects the degree of curvature of the surface on the side where the image of each divided portion is displayed;
An image processing unit that performs image processing according to each degree of curvature detected by the curvature detection unit on each image divided by the image dividing unit;
A display device comprising: a display control unit configured to display each image subjected to image processing by the image processing unit on a corresponding virtual divided portion.

In the present invention, the curvature detection unit
Each of the virtual divided portions is a pair of conductive lines provided along a direction orthogonal to the virtual divided line, and one conductive line is provided on one side in the thickness direction of the virtual divided portion, and the other conductive line is virtual. A pair of conductive wires provided on the other side in the thickness direction of the divided portion;
A resistance measuring unit for measuring the electrical resistance values of one conductive line and the other conductive line between both ends in the direction perpendicular to the virtual dividing line of the virtual dividing part;
And a calculation unit that calculates a degree of curvature based on a ratio between the electrical resistance value of one conductive wire measured by the resistance measurement unit and the electrical resistance value of the other conductive wire.

  Further, according to the present invention, the direction in which the image processing unit orthogonally intersects the virtual dividing line of each image with a scaling factor corresponding to the degree of curvature of each detected virtual dividing portion for each image divided by the image dividing unit. The zooming process is performed.

The present invention further includes a position detection unit that detects the relative position of the observer with respect to the display panel,
The image processing unit, for each image divided by the image dividing unit, uses a virtual magnification of each image at a scaling factor according to the degree of curvature of each detected virtual divided portion and the relative position of the detected observer. A scaling process in a direction orthogonal to the dividing line is performed.

The present invention is also a display method for displaying an image on a flexible display panel,
A step of detecting a degree of curvature for each virtual divided portion with respect to a plurality of virtual divided portions of the display panel divided by the virtual dividing lines parallel to each other;
A step of dividing an image to be displayed on the display screen by the image dividing unit so as to correspond to each virtual divided portion of the display panel;
An image processing unit that performs image processing corresponding to each degree of curvature detected on each image divided by the image dividing unit;
A display control unit comprising: displaying each image on which image processing has been performed in a corresponding virtual divided portion.

  According to the present invention, the display panel is flexible and includes a plurality of virtual division portions that are divided by virtual division lines that are parallel to each other. The image dividing unit divides the image displayed on the display screen so as to correspond to each virtual divided part, and the curvature detecting unit detects the degree of curvature of the surface on the side displaying the image of each virtual divided part.

  When the image processing unit performs image processing corresponding to each degree of curvature detected by the curvature detection unit on each image divided by the image dividing unit, the display control unit performs image processing by the image processing unit. Each of the images thus displayed is displayed in the corresponding virtual divided portion.

  Since the degree of curvature in each divided portion of the display panel is detected by the curvature detection unit, high-quality images can be displayed even if the display screen is curved by performing image processing according to the degree of curvature. .

  Further, according to the present invention, each of the virtual divided portions is provided along the direction perpendicular to the virtual dividing line, and one conductive line is provided on one side in the thickness direction of the divided portion, and the other conductive line is virtually divided. A pair of conductive lines provided on the other side in the thickness direction of the portion is included. The resistance measurement unit measures the electrical resistance value of one conductive line and the other conductive line between both ends in the direction perpendicular to the virtual division line of the virtual division part, and the calculation unit is measured by the resistance measurement unit The degree of curvature is calculated based on the ratio between the electrical resistance value of one conductive wire and the electrical resistance value of the other conductive wire.

  The degree of curvature can be detected with a simple configuration without using various sensors such as a displacement sensor.

  According to the invention, the image processing unit orthogonally intersects the virtual dividing line of each image with a scaling factor corresponding to the degree of curvature of each detected virtual dividing portion for each image divided by the image dividing unit. A scaling process in the direction to be performed is performed.

  The quality of the displayed image can be improved by simply performing a unidirectional scaling process on the image.

  According to the present invention, the image processing unit further includes a position detection unit that detects a relative position of the observer with respect to the display panel, and the image processing unit is detected for each image divided by the image division unit. A scaling process in a direction orthogonal to the virtual dividing line of each image is performed at a scaling ratio corresponding to the degree of curvature of each virtual divided part and the relative position of the detected observer.

  As a result, image processing according to the position of the observer viewing the display panel can be performed, so that the quality of the displayed image can be improved even if the position viewed by the observer is different.

  According to the invention, the image division unit divides the image to be displayed on the display screen so as to correspond to each virtual division part, and the curvature detection unit is divided by the virtual division lines parallel to each other. For a plurality of virtual divided portions, the degree of curvature for each virtual divided portion is detected.

  When the image processing unit performs image processing corresponding to each detected degree of curvature on each image divided by the image dividing unit, the display control unit responds to each image that has been subjected to image processing. Display in each virtual segment.

  By detecting the degree of curvature in each virtual divided portion of the display panel and performing image processing according to the degree of curvature, a high-quality image can be displayed even if the display screen is curved.

It is a block diagram which shows the structure of the display apparatus 1 which is 1st Embodiment of this invention. It is a figure for demonstrating the detection method of the curvature degree by the curvature degree detection part. It is a schematic diagram which shows the structure of the curvature degree detection part 20 in the case of detecting a curvature degree separately. 4 is a flowchart showing image display processing by the display device 1. It is a block diagram which shows the structure of 1 A of display apparatuses of 2nd Embodiment. It is a block diagram which shows the structure of the display apparatus 1B of 3rd Embodiment.

  FIG. 1 is a block diagram showing a configuration of a display device 1 according to the first embodiment of the present invention. The present invention is a display device including a flexible display panel, and can display an image with the display panel curved.

  The display device 1 includes a display panel 2 that displays an image and a control unit 3 that controls the operation of the display panel 2. The display panel 2 is formed of a resin-made flexible substrate, includes a display element such as a liquid crystal between the two substrates, and is formed on at least one main surface based on image data input from the control unit 3. An image can be displayed.

  The display panel 2 has, for example, a rectangular display screen 2a and displays an image on the display screen 2a. Since the display panel 2 has flexibility, it can be curved along the shape of a desired place where the display device 1 such as a building column is desired to be installed. Which part of the display panel 2 is curved depends on the shape of the wall surface to be installed.

  If the image displayed on the curved display panel 2 is the same as the image displayed on the flat, non-curved display panel, it is not preferable because the image is distorted or contracted at the curved portion.

  In the present invention, the display device 1 self-determines the degree of curvature of the display panel 2, performs image processing according to the degree of curvature, and displays an image on the curved display panel 2. In order to self-determine the degree of curvature, the display panel 2 is divided in advance into a plurality of virtual divided portions (virtual divided portions), and for each divided portion, in what direction and in what direction the surface on the image display side is displayed. Detect if it is curved. The display screen 2a is rectangular in this embodiment. The divided portion is divided by a virtual dividing line parallel to the vertical side of the display screen 2a. In the example shown in FIG. 1, the display panel 2 is divided into six parts in the order of divided parts A to F in the horizontal direction.

  The display panel 2 includes a bending degree detection unit 20 and detects the bending degree for each divided portion. The method of detecting the degree of curvature is not particularly limited, but at least how much the divided portion is curved convex toward the display surface on which the image is displayed or convex toward the back side. It suffices if it can be detected.

  When the bending degree detection unit 20 detects the bending degree for each divided portion, the detected bending degree is transmitted to the control unit 3 side.

  The control unit 3 includes a viewing angle calculation unit 30, a variable magnification calculation unit 31, a variable magnification storage unit 32, an image magnification change unit 33, an image division unit 34, and an image data storage unit 35. The viewing angle calculation unit 30 receives the bending degree detected by the bending degree detection unit 20 of the display panel 2, and calculates the viewing angle of each divided portion based on the bending degree.

  Here, the viewing angle is assumed to be an observer who views the display panel 2 from a front position that is a predetermined distance away from the installation position of the display panel 2, and the viewing angle calculation unit 30 is based on the assumed observer. Calculate the viewing angle when looking at each segment.

  The scaling factor calculator 31 calculates a target scaling factor for each divided portion based on the viewing angle for each divided portion calculated by the viewing angle calculator 30. In addition, a change step size necessary for changing the scaling ratio is also calculated.

  If a scaling factor has already been set for each divided part, the set scaling factor and the target scaling factor are compared, and if they match, the memory allocated to the corresponding divided part of the scaling factor storage unit 32 is stored. The scaling factor is stored in the area. If they do not match, the scaling factor is changed by the change step width, and the scaling factor is stored in the storage area assigned to the corresponding divided portion of the scaling factor storage unit 32.

  The image data storage unit 35 stores an image to be displayed on the display panel 2 in advance. An image before changing to an image corresponding to the degree of curvature of the display panel 2 is referred to as a pre-change image, and an image after changing to an image corresponding to the degree of curvature of the display panel 2 is referred to as an after-change image.

  The pre-change image stored in the image data storage unit 35 is divided by the image dividing unit 34 so as to correspond to each divided portion, and becomes a divided image.

  The image magnification changing unit 33 performs a magnification process on the divided image corresponding to each divided portion based on the magnification for each divided portion stored in the magnification storage unit 32. This scaling process is performed on all the divided images, and the obtained divided images after the scaling process are combined to create a modified image, which is stored in the image data storage unit 35.

  By displaying the changed image on the display panel 2, it is possible to display an image that has been appropriately scaled according to the degree of curvature of the display panel 2.

  For example, it is assumed that the display panel 2 is installed on a pillar of a building and the display panel 2 is curved in a substantially semicircular shape. In an observer viewing the semicircular display panel 2 from the front, the central divided portions C and D have the largest viewing angle, the divided portions B and E adjacent to the divided portions C and D have a small viewing angle, and both ends. The divided portions A and F have the smallest viewing angle.

  When the pre-change image not subjected to the scaling process is displayed as it is on the display panel 2 curved in a semicircular shape, the front observer can see the images displayed in the central divided portions C and D as they are. However, the images displayed in the divided portions B and E appear to be reduced in the horizontal direction. The images displayed in the divided portions A and F at both ends appear to be further reduced.

  Such a display is corrected, and even the curved display panel 2 may be subjected to a scaling process so that it can be seen by an observer as if the display panel 2 is not curved. For the divided images displayed in the central divided portions C and D, there is almost no need to change the magnification. The divided images displayed in the divided portions B and E are subjected to scaling processing so as to be enlarged in the horizontal direction. The divided images displayed in the divided portions A and F at both ends are subjected to scaling processing so as to be further enlarged in the horizontal direction.

  The above example is about the case of the display panel 2 curved in a semicircular shape. However, the present invention is not limited to this, and various curves such as a case where only one horizontal end of the display panel is curved or a waveform is curved. Regardless of the state, calculate the viewing angle with respect to the front observer for each divided part, calculate the scaling factor according to the viewing angle, and apply the scaling process to each divided image, An observer can see an image with less distortion.

  FIG. 2 is a diagram for explaining a method of detecting the degree of curvature by the degree of curvature detection unit 20. FIG. 2A is a diagram showing one divided portion in a non-curved state, and FIG. 2B is a diagram showing one divided portion in a curved state. FIG. 2 is a diagram when the display panel 2 is viewed from the vertical direction.

  The curvature degree detection unit 20 has a pair of conductive lines 100 and 101 embedded outside the image display area of the display panel 2. One conductive line 100 is provided on one side in the thickness direction of the divided portion, and the other conductive line 101 is provided on the other side in the thickness direction of the divided portion. If one side in the thickness direction is the surface side on which an image is displayed and the other side in the thickness direction is the back side, the conductive line 100 is located on the front side and the conductive line 101 is located on the back side. The pair of conductive lines 100 and 101 are embedded in the divided portion, and are similarly bent along the curve of the divided portion. These conductive lines 100 and 101 are made of a material having a known electric resistivity, and the electric resistance values of the conductive lines 100 and 101 between the horizontal ends of the divided portion (between points A and B). Are measured in advance. The curvature degree detection unit 20 has a measurement unit that measures the electrical resistance values of the conductive wire 100 and the conductive wire 101 between the points A and B. If the electrical resistance values of the conductive wire 100 and the conductive wire 101 are equal when measured, and are the same as the measured value measured in advance, the divided portion is not curved, for example, the degree of curvature is 0 (zero). I understand that.

  When the divided portion is curved, the length of the conductive line between the points A and B changes. In the example of FIG. 2B, the length between the point A and the point B of the conductive wire 101 on the back side is shorter than the conductive wire 100 on the front side. At this time, when the electrical resistance values of the conductive line 100 and the conductive line 101 between the points A and B are measured, the electrical resistance value of the conductive wire 101 on the back surface side is larger than the electrical resistance value of the conductive wire 100 on the front surface side. , It is lowered by the shorter length.

  The difference in the length of the conductive wire between point A and point B increases as the degree of bending increases, and decreases as the degree of bending decreases. That is, the greater the degree of curvature, the greater the difference in electrical resistance value between the conductive wire 100 and the conductive wire 101.

  Therefore, the difference between the electric resistance values of the conductive line 100 and the conductive line 101 or the ratio of the electric resistance values of the conductive line 100 and the conductive line 101 is in a fixed relationship with the degree of curvature of the divided portions. By measuring the electric resistance value of each line 101, the degree of curvature of the divided portion can be determined based on the measured electric resistance value.

  For example, the degree of bending is represented by a numerical value from 0 to 100, where 0 (zero) is an uncurved state, 100 is the most curved state determined by conditions such as the material of the display panel 2 and display quality, and the like. it can.

  Thus, since the degree of curvature can be detected for one divided portion, the degree of curvature can be similarly detected for all of the divided portions constituting the display panel 2. The conductive lines 100 and the conductive lines 101 may be provided one by one over both ends in the horizontal direction of the display panel 2, and each divided portion may use a part of one conductive line.

  The degree of curvature of each divided portion may be detected at the same time for all the divided portions, or one of a plurality of divided portions may be selected and the degree of curvature may be detected individually. FIG. 3 is a schematic diagram illustrating a configuration of the bending degree detection unit 20 in the case where the bending degree is individually detected.

  The curvature degree detection unit 20 includes a measurement position selector 21, selects a measurement position for one divided portion from resistance value measurement positions (points A and B) provided for each divided portion, and selects the selected measurement position. The electrical resistance value between the points A and B of the conductive wire 100 and the conductive wire 101 is measured. Which measurement position is to be selected is because a measurement target instruction is input from the control unit 3 to the measurement position selector 21, and the measurement position selector 21 performs the conductive line 100 and the conductive line 101 in accordance with the measurement target instruction. The electrical resistance value between point A and point B is measured, and the degree of curvature is calculated based on the two measured electrical resistance values. The calculated degree of curvature is output to the control unit 3.

  Next, a second embodiment of the present invention will be described. In the first embodiment, it is assumed that the viewing angle and the magnification ratio are set so that the observer is positioned in front of the display panel 2, and that an appropriate image is displayed when viewed by the observer positioned in front. A scaling process is applied to the image.

  Since the display panel 2 is mainly installed in public facilities and is viewed by various people, not all people necessarily see the display panel 2 from the front of the display panel 2. For example, when the display panel 2 is viewed from an oblique direction, even if an image suitable for the front observer is displayed according to the first embodiment, the image still appears distorted depending on the observer viewed from the oblique direction. become. Further, in the display panel 2 in a curved state, there are some divided portions that cannot be seen at all depending on the position of the observer.

  Even in such a case, in order to display an image suitable for the observer, the relative position of the observer with respect to the display panel 2 is detected, and a scaling process is performed on the image according to the detected position. It is preferable.

  FIG. 4 is a flowchart showing image display processing by the display device 1. This flow is a change stored in the image data storage unit 35 in a state in which the display panel 2 is installed at the installation location, that is, in a state in which the display panel 2 is curved into a desired shape along the wall surface or pillar of the building. The previous image is subjected to a scaling process to be displayed.

  In step S <b> 1, the bending degree detection unit 20 detects the bending degree of each divided portion and sends the detection result to the control unit 3. In step S2, the viewing angle calculation unit 30 of the control unit 3 receives the degree of curvature for each divided part, and calculates the viewing angle of each divided part based on the degree of curvature.

  In step S3, the scaling factor calculation unit 31 calculates a target scaling factor for each divided portion and a change step size for changing the scaling factor based on the calculated viewing angle.

  In step S4, the scaling factor calculation unit 31 compares the scaling factor currently set and the target change scaling factor for each divided portion, and determines whether or not they match. If they all match, the process proceeds to step S9, and the changed image already stored in the image data storage unit 35 is displayed on the display panel 2. If they do not match, in step S5, the variable magnification that does not match is changed by the change step width calculated in step S3. In step S6, the changed scaling factor is stored in the scaling factor storage unit 32 for each divided portion.

  In step S <b> 7, scaling processing based on the scaling factor stored in the scaling factor storage unit 32 is performed on each divided image divided by the image dividing unit 34. In step S8, the divided images after the scaling process are synthesized and stored in the image data storage unit 35 as a changed image. In step S9, the changed image stored in the image data storage unit 35 is displayed on the display panel 2.

  FIG. 5 is a block diagram illustrating a configuration of a display device 1A according to the second embodiment. The difference from the first embodiment is that it has an observer position detector 40, and the viewing angle calculator 30 calculates a viewing angle based on the degree of curvature and the observer position information. Other configurations are the same as those in the first embodiment, and therefore, detailed description thereof is omitted.

  The observer position detector 40 includes a sensor 41 for detecting the position of the observer with respect to the display panel 2. In the present embodiment, the sensor 41 is a weight sensor provided on the floor on the front side of the position where the display panel 2 is installed. For example, the weight sensors are arranged in a matrix, and the weight sensor detects the load applied by the observer when the observer comes near the display panel 2. Of the weight sensors arranged in a matrix, the position of the sensor that detects the load can be set as the position of the observer. Since the position of each weight sensor with respect to the display panel 2 is determined, when the weight sensor detects a load, the relative position of the weight sensor that has detected the load with respect to the display panel 2 is the relative position of the observer with respect to the display panel 2. It can be detected.

  For example, as in the first embodiment, the display panel 2 is curved in a semicircular shape, and the observer position detection unit 40 detects that the position of the observer is the left position toward the display panel 2. It shall be assumed. Since the viewing angle calculation unit 30 knows that the display panel 2 is curved in a semicircular shape depending on the degree of curvature, when the observer is located on the left side, the viewing angles of the divided parts B and C are large, and the dividing is performed. The viewing angles of the portions A and D are calculated to be small. Since the divided portions E and F can hardly be seen from the position of the observer, the viewing angle of the divided portions E and F is set to 0 (zero).

  The scaling factor calculation unit 31 does not calculate scaling factors so as not to display images in the divided parts E and F, calculates scaling factors for the divided parts A to D, and stores them in the scaling factor storage unit 32.

  As described above, when a divided portion that does not display an image is generated, it is necessary to change the division of the image by the image dividing unit 34 in order to display the entire image in the remaining divided portion. In the above example, since the entire image needs to be displayed in the divided portions A to D, the divided image is changed from 6 divisions to 4 divisions. The four divided images are displayed in the divided portions A to D, respectively.

  For the image division change by the image dividing unit 34, the image dividing unit 34 refers to any of the calculation result of the viewing angle calculation unit 30, the calculation result of the scaling factor calculation unit 31, or the scaling factor stored in the scaling factor storage unit 32. Then, the number of divisions may be changed.

  In addition, when there is no divided part that cannot be seen by the observer from the curved state of the display panel 2 and the position of the observer, and the observer can see all the divided parts, the image division by the image dividing unit 34 is changed. There is no need.

  The scaling process performed on each divided image by the image magnification changing unit 33 is the same as in the first embodiment.

  By displaying the divided image subjected to the scaling process on the display panel 2 as a post-change image, an optimal image display in consideration of the position of the observer in addition to the curved state of the display panel 2 is performed. Can do.

  In the above description, a case has been described in which the number of image divisions by the image dividing unit 34 is changed in accordance with the position of the observer and no image is displayed in the divided parts that are not visible to the observer. The width of each divided portion may be changed by changing the position of the line.

  For example, when it is detected that the position of the observer is the position on the left side toward the display panel 2, a portion that is hardly visible to the observer, that is, the right half from the center of the display panel 2 is divided into one. The left half from the center of the display panel 2 is divided into five divided portions. When the width of each divided portion is changed, the bending degree detection unit 20 shown in FIG. 3 can change the measurement position in accordance with each divided portion and measure the bending degree for each divided portion. The image dividing unit 34 generates a divided image by dividing the pre-change image according to the changed divided portion. The viewing angle calculation unit 30 calculates the viewing angle of each divided part based on the degree of curvature of the divided part after the change. The processing after the scaling factor calculation unit 31 is the same as described above.

  As described above, by reducing the width of each divided portion in a portion that can be seen well by an observer, a finer display image can be controlled.

  FIG. 6 is a block diagram illustrating a configuration of the display device 1B according to the third embodiment. The difference from the second embodiment is that a lightness calculation unit 50, a lightness storage unit 51, and an image lightness change unit 52 are provided. Other configurations are the same as those in the second embodiment, and therefore, detailed description thereof is omitted.

  In the present embodiment, the brightness of each divided portion is to be changed according to the viewing angle calculated by the viewing angle calculation unit 30. Since the divided portion with a small viewing angle is a portion that is difficult for an observer to see, it is preferable to increase the brightness to improve the visibility.

  The brightness calculation unit 50 calculates the brightness for each divided portion based on the viewing angle for each divided portion calculated by the viewing angle calculation unit 30. The calculated brightness is stored in a storage area assigned to the corresponding divided portion of the brightness storage unit 51. The image lightness changing unit 52 changes the lightness according to the lightness stored in the lightness storage unit 51 with respect to each divided image after the magnification processing performed by the image magnification changing unit 33. Then, the obtained divided images after changing the brightness are combined to create a changed image and stored in the image data storage unit 35.

  When the brightness is different for each divided image, a brightness gap may occur at the boundary between the divided images, and the display quality of the image may be degraded. Therefore, among the brightnesses stored in the brightness storage unit 51, adjacent divided portions are adjacent to each other. When the difference in brightness is larger than a predetermined threshold value, it is preferable to correct the brightness so as to change stepwise in the vicinity of the boundary, that is, in the horizontal end of the divided portion.

  In the third embodiment, the brightness change process is further added to the second embodiment. However, the brightness change process may be further added to the first embodiment.

  In each of the above embodiments, the divided portion of the display panel 2 has been described as having a predetermined fixed size. However, the size of the divided portion of the display panel 2 is not fixed but variable, that is, virtual. The structure which can change arbitrarily the position of a dividing line may be sufficient.

DESCRIPTION OF SYMBOLS 1,1A, 1B Display apparatus 2 Display panel 2a Display screen 3 Control part 20 Curvature degree detection part 21 Measurement position selector 30 View angle calculation part 31 Variable magnification calculation part 32 Variable magnification memory | storage part 33 Image magnification change part 34 Image division part 35 Image Data Storage Unit 40 Observer Position Detection Unit 41 Sensor 50 Brightness Calculation Unit 51 Brightness Storage Unit 52 Image Brightness Change Unit 100, 101 Conductive Wire

Claims (5)

A display panel having flexibility, having a display screen for displaying an image, and comprising a plurality of virtual division portions divided by virtual division lines parallel to each other;
An image dividing unit that divides an image displayed on the display screen so as to correspond to each virtual divided portion;
A curvature detection unit for detecting the degree of curvature of the surface on the side where the image of each virtual divided portion is displayed;
An image processing unit that performs image processing according to each degree of curvature detected by the curvature detection unit on each image divided by the image dividing unit;
A display device comprising: a display control unit configured to display each image subjected to image processing by the image processing unit on a corresponding virtual divided portion. The curvature detector
Each of the virtual divided portions is a pair of conductive lines provided along a direction orthogonal to the virtual divided line, and one conductive line is provided on one side in the thickness direction of the virtual divided portion, and the other conductive line is virtual. A pair of conductive wires provided on the other side in the thickness direction of the divided portion;
A resistance measuring unit for measuring the electrical resistance values of one conductive line and the other conductive line between both ends in the direction perpendicular to the virtual dividing line of the virtual dividing part;
2. A calculation unit that calculates a degree of curvature based on a ratio between an electrical resistance value of one conductive wire measured by the resistance measurement unit and an electrical resistance value of the other conductive wire. The display device described.   The image processing unit performs a scaling process on each image divided by the image dividing unit in a direction orthogonal to the virtual dividing line of each image at a scaling factor according to the degree of curvature of each detected virtual divided part. The display device according to claim 2, wherein the display device is applied. A position detection unit for detecting the relative position of the observer with respect to the display panel;
The image processing unit, for each image divided by the image dividing unit, uses a virtual magnification of each image at a scaling factor according to the degree of curvature of each detected virtual divided portion and the relative position of the detected observer. 3. A display device according to claim 2, wherein a scaling process in a direction orthogonal to the dividing line is performed. A display method for displaying an image on a flexible display panel,
A step of detecting a degree of curvature for each virtual divided portion with respect to a plurality of virtual divided portions of the display panel divided by the virtual dividing lines parallel to each other;
A step of dividing an image to be displayed on the display screen by the image dividing unit so as to correspond to each virtual divided portion of the display panel;
An image processing unit that performs image processing corresponding to each degree of curvature detected on each image divided by the image dividing unit;
A display control unit comprising: displaying each image on which image processing has been performed in each corresponding virtual divided portion.

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