KR101929003B1 - Oled display apparatus having optical sensing funtion - Google Patents

Abstract

An OLED display device having a light sensing function is provided. An OLED display device having a light sensing function can sense an input light from an external object passing through an imaging pattern included in a display panel and photograph an external object.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an OLED display device having a light sensing function,

The present invention relates to an OLED display device capable of photographing while allowing an image to be displayed through a light emitting portion and simultaneously allowing input light from an external object to pass through a transparent window to be sensed by a sensor panel.

OLED (Organic Light Emitting Diode) display devices, unlike conventional LCD (Liquid Crystal Display) display devices, have been attracting attention in recent years because they can emit light themselves.

A display panel including an imaging pattern formed of a plurality of organic light emitting diode pixels (OLED Pixel), and an OLED display having a light sensing function including a sensor panel for sensing input light from an external object passing through the imaging pattern Device is provided.

The display panel may form an imaging pattern by arranging each of the plurality of organic light emitting diode pixels in consideration of transparency of the window included in the organic light emitting diode pixel.

In addition, the display panel may be formed by combining a first organic light emitting diode pixel including a transparent window and a second organic light emitting diode pixel including an opaque window to form a circular hole, a modified uniformly redundant array (MURA) Or the like can be formed.

The OLED display device having the light sensing function further includes an IR light source for transmitting an IR (Infrared Ray) to an external object and a pass filter for extracting an infrared component from the input light including IR returned by the external object And the sensor panel can detect the extracted infrared component.

Display of an image through the light emitting unit and detection of input light from an external object passing through an imaging pattern included in the display panel are simultaneously performed to display an image and photograph an external object.

By using an IR light source for transmitting an IR to an external object and a pass filter for extracting an infrared component related to IR from the input light, it is possible to accurately detect the external object without noise.

FIG. 1 shows an exemplary configuration of an OLED display device having a light sensing function.
2 shows an example of an organic light emitting diode pixel.
3 is a view illustrating an embodiment of an imaging pattern of a display panel included in an OLED display device having a light sensing function.
4 is a view showing another embodiment of an imaging pattern of a display panel included in an OLED display device having a light sensing function.
5 shows another exemplary configuration of an OLED display device having a light sensing function.
6 shows an example of an organic light emitting diode pixel including an IR light source.
7 shows an example of an organic light emitting diode pixel including a pass filter.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The term 'organic light emitting diode (OLED)', which is continuously used in this specification, refers to a self-luminescent device unlike a conventional LCD that emits light by a backlight. Generally, it is attracting attention as a next generation display such as LCD and PDP due to superior color, sharpness, wide viewing angle, fast response speed, low power and thin shape. In particular, in the present specification, a display device including an organic light emitting diode and including a window for passing input light from an external object while displaying an image is provided, thereby providing a display device .

FIG. 1 shows an exemplary configuration of an OLED display device having a light sensing function.

Referring to FIG. 1, an OLED display device 101 having a photo-sensing function according to an exemplary embodiment includes a display panel 103 and a sensor panel 105.

First, the display panel 103 includes an imaging pattern formed of a plurality of organic light emitting diode pixels. That is, the display panel 103 includes an imaging pattern formed of a plurality of organic light emitting diode pixels, and an input light from an external object is passed through the imaging pattern, thereby providing an environment for shooting an external object.

The display panel 103 may display an image through an organic light emitting diode and may display an image through an organic light emitting diode without an additional mode switching by time division, So that it is possible to photograph the external object at the sensor panel 105 at the rear end.

In the imaging pattern formation, the display panel 103 combines a first organic light emitting diode pixel including an opaque window and a second organic light emitting diode pixel including a transparent window to form various types of imaging patterns.

For example, the display panel 103 may adjust the opaque window in the first organic light emitting diode pixel to opaque, adjust the transparent window in the second organic light emitting diode pixel to be transparent, For example, an imaging pattern including a circular hole can be formed.

Similarly, the display panel 103 adjusts the transparency of the window in the first and second organic light emitting diode pixels appropriately and combines to form a polygonal hole other than the circular hole, or a modified uniformly redundant array (MURA) Various imaging patterns can be formed.

The number of imaging patterns to be formed can be configured in consideration of the number of input lights inputted from an external object. For example, the display panel 103 may form and include two imaging patterns or more imaging patterns when it is desired to pass two input light beams.

In addition, the display panel 103 may form various imaging patterns by changing the number or positions of the plurality of organic light emitting diode pixels in consideration of transparency of windows included in the organic light emitting diode pixels. That is, the display panel 103 can form a plurality of imaging patterns according to the external environment in which the input light is input, and can flexibly change the number of imaging patterns or positions of the imaging patterns according to a predetermined period. For example, the display panel 103 may repeatedly form a plurality of imaging patterns in a horizontal or vertical direction.

The function of displaying an image by the display panel 103 will be described with reference to Fig.

2 shows an example of an organic light emitting diode pixel.

The display panel 103 includes a plurality of organic light emitting diode pixels, and does not have a separate backlight unit, and can emit light to display an image. At this time, the image display on the display panel 103 can be performed simultaneously with the passage of the input light and the shooting (sensing) of the external object through the above-described imaging pattern.

2, the organic light emitting diode pixel includes a light emitting unit that emits one of red light, green light, or blue light using organic light emitting materials, a circuit unit (not shown) for driving the light emitting unit, And a window (e.g., a glass substrate) that can pass or block externally input light. Here, in the case where the window is formed to be transparent, the window can pass the light input from the outside, and when the window is formed to be opaque, the light can be blocked.

For example, the first organic light emitting diode pixel 201 includes a light emitting unit 203 for displaying an image to be cast by light, a circuit unit 205 for driving the light emitting unit 203, And an opaque window 207 for displaying an image. The second organic light emitting diode pixel 211 is configured similarly to the first organic light emitting diode pixel 201, but may be formed of a transparent window 217 through which light input from the outside is directly transmitted.

Referring again to FIG. 1, the sensor panel 105 senses input light from an external object passing through an imaging pattern included in the display panel 103, acquires image data for the external object, You can shoot. At this time, the entire transparency of the imaging pattern included in the display panel 103 maintains a certain level of transparency, thereby guiding the quality of the image data acquired by the sensor panel 105 to be stabilized.

That is, the sensor panel 105 is located at the rear end of the display panel 103, and senses the input light that has been input from the external object and passed through the display panel 103 having a certain level of transparency as a whole, Data can be acquired.

For example, the sensor panel 105 senses input light passing through a window by configuring a sensor portion for sensing input light and an opening portion for passing the input light in a lattice pattern or a repeating pattern. At this time, the sensor panel 105 may further include a color filter to obtain image data corresponding to the color of the color filter.

Accordingly, the OLED display device 101 simultaneously displays the image through the light emitting portion and the input light from the external object passing through the imaging pattern included in the display panel, thereby displaying the image The external object can be photographed together.

In addition, an OLED display device having a light sensing function can be applied to various fields (e.g., proximity sensing, gesture recognition, photographing function) by using a video display and an external object photographing function.

For example, when displaying a 3D image, an OLED display device having a light sensing function captures an external object and acquires distance information or positional information on an external object from the display device through the captured image, It is possible to easily detect an operation on a stereoscopic image which is easy to be positioned outside (e.g., outside the screen) of the display device.

In addition, when the OLED display device having a light sensing function is applied to a terminal supporting a video call, as the positions of the video display and the shooting of the external object coincide with each other, can do.

When the OLED display device having a light sensing function is applied to a large screen such as a Smart Window, the OLED display device obtains the distance or position information from the large screen to the counterpart through the captured image of the counterpart, So that the user can feel as if they are in the same space as the other party.

Also, the OLED display device 101 recognizes that the external object is moved in a predetermined space in consideration of a change in the position where the input light is sensed, for example, so as to confirm the spatial movement such as dragging after touching the space of the user . For this purpose, virtual coordinates can be set for each hole in the imaging pattern included in the display panel 103, and the sensor panel 105 can detect a plurality of input light detected within a predetermined time interval It is possible to identify the coordinates of the holes passing through each of them, thereby confirming the spatial movement with respect to the external object.

For example, with respect to the 16 holes in the imaging pattern in Fig. 1, the display panel 103 can sequentially set coordinates up to the hole B (4.4) arranged at the lower right with the hole A disposed at the upper left as the reference (1.1) . Thereafter, when a plurality of input lights for the external object pass sequentially through the hole A and the hole B during the predetermined time period, the sensor panel 105 determines that the external object is moved from the coordinates (1.1) to the coordinates (4.4) It is possible to detect a danger.

Also, the OLED display device 101 can confirm the spatial touch by the external object by combining the sensing results for each hole in the imaging pattern with respect to one external object.

For example, as shown in FIG. 1, when there are 16 holes arranged in the imaging pattern, the sensing result of the sensor panel 105 associated with each hole for the external object is determined by the positional relationship between the hole and the external object, The angle of incidence of light, and the like. Accordingly, the sensor panel 105 can accurately recognize the position in the space of the external object, that is, the aspect of the space touch, by combining the sixteen sensing results.

That is, the sensor panel 105 can sense the position of the external object in the space by using the fact that the sensing result of the input light to the external object is slightly different according to the placement position of each hole.

A model for calculating the spatial position of an external object using a plurality of different sensing results can be found in a well known document (Matthew Hirsch, Douglas Lanman, Ramesh Raskar, and Henry Holtzman, BiDi Screen: Depth and Lighting Aware Interaction and Dislay, " in Proceedings of SIGGRAPH ASIA Dec. 2009.), and a detailed description thereof will be omitted herein.

Further, the OLED display device 101 combines the results obtained by successively performing the sensing for each hole in the imaging pattern with respect to the external object at intervals of time, respectively, and, using the combined results, , The movement of the space such as a drag can be confirmed more accurately.

For example, as shown in Fig. 1, when 16 holes are arranged in the imaging pattern, the OLED display device 101 obtains the result of combining the sensing results at the sensor panel 105 associated with the 16 holes at the time T1 The end position in the space can be derived through the result of combining the sensing result in the sensor panel 105 associated with the sixteen holes at the time point T2 similarly to the starting position of the external object in the space.

That is, the OLED display device 101 displays the position of the external object in the space (for example, coordinates (1.1)) at the time point T1 and the position in the space of the external object at the time point T2 4.4)), and it is possible to sense that the external object is space-shifted from the coordinates (1.1) to the coordinates (4.4).

Accordingly, the OLED display device 101 can accurately confirm the spatial movement of the external object based on the change of the start position and the end position in the space.

3 is a view illustrating an embodiment of an imaging pattern of a display panel included in an OLED display device having a light sensing function.

As described above, the display panel arranges and combines each of the plurality of organic light emitting diode pixels in consideration of whether or not the window included in the organic light emitting diode pixel is transparent, thereby forming a circular hole, a polygonal hole, The imaging pattern can be formed by using the imaging pattern.

Referring to FIG. 3, the display panel 301 includes an imaging pattern formed of a plurality of organic light emitting diode pixels, and allows input light from an external object to pass through the imaging pattern.

The display panel 301 is an imaging pattern through which light is transmitted, and a pattern 303 including a circular hole may be formed, but the present invention is not limited thereto, and a pattern 305 or a MURA including polygonal holes may be formed. A pattern 307 may be formed.

4 is a view showing another embodiment of an imaging pattern of a display panel included in an OLED display device having a light sensing function.

Referring to FIG. 4, a plurality of imaging patterns may be repeatedly formed on the display panel.

The display panel can pass a plurality of input lights emitted from the object through a plurality of imaging patterns.

For example, when two imaging patterns are formed, the display panel can pass two input lights, and when 12 imaging patterns are formed, 12 display light can pass through the display panel.

Thus, the OLED display device allows a plurality of input lights from an external object to pass through a display panel having a plurality of imaging patterns formed thereon, and the sensor panel senses the plurality of input lights to acquire an image of an external object , It is possible to obtain an effect of photographing using a plurality of cameras.

5 shows another exemplary configuration of an OLED display device having a light sensing function.

Referring to FIG. 5, an OLED display device 501 having a photo sensing function according to another exemplary embodiment may further include a pass filter 505 in the OLED display device disclosed in FIG.

As described above, the display panel 503 includes an imaging pattern formed of a plurality of organic light emitting diode pixels, and can pass input light (e.g., sunlight) from an external object through the imaging pattern.

The input light may include an infrared ray (IR) reflected by an external object. To this end, the OLED display device may include an IR light source for transmitting the IR to an external object provided on a part of the display panel 503 . Thus, the OLED display device can detect more infrared components from the input light, and can capture clearer image data of the external object.

The IR transmitted from the IR light source is returned by the external object and input to the display panel 503 as input light and the display panel 503 transmits the input light to the subsequent pass filter 505 through the imaging pattern, .

The pass filter 505 is disposed between the display panel 503 and the sensor panel 507 (denoted as a 'first pass filter') to receive an infrared component from input light passing through the imaging pattern of the display panel 503 Can be extracted.

The sensor panel 507 located at the rear end of the first pass filter senses the extracted infrared component and generates image data by photographing (e.g., touching with space) the external object.

As another example, the IR light source may be included in the organic light emitting diode pixels as an internal configuration. In this case, the input light including the IR returned by the external object is extracted by the pass filter 505 (referred to as a 'second pass filter') included in the organic light emitting diode pixel, do.

The pass filter 505 as the second pass filter can extract an infrared component from the input light input from the external object and transmit the infrared component to the imaging pattern of the display panel 503.

The sensor panel 507 positioned at the rear end of the display panel 503 can detect an infrared component that has passed through the imaging pattern of the display panel 503. Accordingly, the sensor panel 507 can detect an image of an external object using only the infrared component detected by the pass filter 505, as the light rays (for example, visible light) excluding the infrared rays included in the input light are blocked, By acquiring data, it is possible to reduce noise to an image.

6 shows an example of an organic light emitting diode pixel including an IR light source.

6, the organic light emitting diode pixel 601 includes red light, green light, or blue light for displaying an image, and an IR light source for transmitting IR to an external object A circuit portion 605 for driving the light emitting portion, and a window (e.g., a glass substrate) 607 for passing or blocking light input from the outside.

Accordingly, the organic light emitting diode pixel is an imaging pattern that can display an image by any one or a combination of red light, green light, and blue light, and is configured by a window capable of adjusting transparency, So that the external object can be sensed by using the infrared component in the pass filter and the sensor panel in the rear stage.

Here, the IR light source may be included in the organic light emitting diode pixel, but not limited thereto, and may be included in a case (e.g., a bezel) of the OLED display device.

7 shows an example of an organic light emitting diode pixel including a pass filter.

7, the organic light emitting diode pixel 701 includes a light emitting portion 703 that emits one of red light, green light, or blue light using light emitting organic material, A circuit portion 705 for driving the light emitting portion 703 and a window (for example, a glass substrate) 707 through which light inputted or externally inputted can be passed or blocked, wherein an infrared component And a second pass filter for extracting the second pass filter.

An OLED display device having a light sensing function detects an infrared component from an external object passing through an imaging pattern included in a display panel by using an IR light source for transmitting an IR to an external object and a pass filter for extracting an infrared component Thus, the external object can be photographed using the IR.

Further, according to an OLED display device having a light sensing function, input light from an external object is transmitted to a sensor pixel through adjustment of transparency of a window included in the organic light emitting diode pixel, The sensing of the external object, that is, the sensing of the space touch, can be implemented in parallel without changing the mode of the display device.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

101: OLED display device with light sensing function
103: Display panel
105: Sensor panel

Claims (31)

A display comprising a plurality of pixels
At least one pixel of the plurality of pixels includes a light emitting portion, a circuit portion for driving the light emitting portion, a pass filter, and a first window, and the light emitting portion receives a request for sensing an external object, Emitting light for sensing the external object; And
A light emitting portion for emitting light to the external object, at least a part of light reflected by the external object and for sensing the external object passing through the first window, Which is formed on the second surface of the display or below the second surface,
Lt; / RTI >
The light emitting unit includes a red light source, a green light source, a blue light source, and an infra-red (IR) light source, the light emitting unit is disposed on the circuit unit, And the pass filter is disposed at an upper portion or a lower portion of the first window,
The pass filter extracts an infrared component from a part of the passed light,
Wherein the other of the plurality of pixels includes a second window for blocking another portion of the light reflected by the outer object,
Wherein the first window and the second window form an imaging pattern,
Wherein the imaging pattern comprises a plurality of holes,
Wherein a virtual coordinate set in each of the plurality of holes passed through each of the detected at least a part of light is identified within a predetermined time interval,
Display device. The method according to claim 1,
Wherein the red light source, the green light source, or the blue light source comprises an organic material that emits light. The method according to claim 1,
Wherein the first window is transparent. The method according to claim 1,
Wherein the first window comprises a glass substrate. The method according to claim 1,
And a pass filter disposed in the first window and extracting a specific light component from a part of the passed light. The method according to claim 1,
Wherein the sensor senses at least a portion of the reflected light while the image is being displayed through the display. The method according to claim 1,
Wherein the sensor includes a color filter used to acquire image data corresponding to the external object based on at least a part of the reflected light. 8. The method of claim 7,
Wherein the sensor generates an image corresponding to the external object based on the image data. The method according to claim 1,
Wherein the sensor senses one or more combinations of proximity, movement, gesture, distance, position and image of the external object associated with the display. delete The method according to claim 1,
And the second window is opaque.

delete The method according to claim 1,
Wherein the imaging pattern comprises a circular hole, a polygonal hole or a MURA (Modified Uniformly Redundant Array).
In the display device,
A case defining at least a portion of an outer surface of the display device;
A display including a plurality of pixels including at least a portion of the case and including a light emitting portion for emitting light for sensing the external object to a first surface of the display when a request to sense the external object is received
At least one of the plurality of pixels comprises a window,
The window passing a portion of the light reflected by the outer object;
A circuit unit for driving the light emitting unit; And
And a light source that is formed at a rear end or a bottom of the display and is irradiated to the external object from the light emitting portion so as to detect at least a part of the light reflected by the external object and passed through the window, A sensor for acquiring an image for the object
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Wherein the light emitting portion includes a red light source, a green light source, and a blue light source, the light emitting portion is disposed on the circuit portion, the circuit portion is disposed on the window,
The window forms an imaging pattern,
Wherein the imaging pattern comprises a plurality of holes,
Wherein a virtual coordinate set in each of the plurality of holes passed through each of the detected at least a part of light is identified within a predetermined time interval,
Display device.
15. The method of claim 14,
Wherein the light emitting unit includes an infrared light source. 16. The method of claim 15,
Wherein the light emitting portion includes a red light source, a green light source, or a blue light source. 15. The method of claim 14,
Wherein at least a part of the case forms a bezel of the display device, and the light emitting portion is included in the bezel. delete 15. The method of claim 14,
And a pass filter disposed in the window and extracting a specific light component from a part of the passed light. 15. The method of claim 14,
Further comprising a pass filter disposed between the window and the sensor, for extracting a specific light component from a portion of the passed light. A display comprising a first pixel and a second pixel
Wherein the first pixel includes a first light emitting portion and a first window, the second pixel includes a second light emitting portion and a second window, each of the first light emitting portion and the second light emitting portion includes an external object And wherein the first window emits light for sensing the external object to a first surface of the display upon receipt of a request to sense the external object, The first pixel including a first circuit portion for driving the first light emitting portion and the second pixel including a second circuit portion for driving the second light emitting portion; And
A second light emitter for emitting light from the first light emitter or from the second light emitter to an external object and for sensing at least a portion of the light reflected by the external object and passed through the first window, And a sensor formed on the second surface or below the second surface,
Wherein the first light emitting portion and the second light emitting portion each include a red light source, a green light source, and a blue light source, the first light emitting portion is disposed on the first circuit portion, The second light emitting portion is disposed on the second circuit portion, the second circuit portion is disposed on the second window,
Wherein the first window is a transparent substrate,
Wherein the first window and the second window form an imaging pattern,
Wherein the imaging pattern comprises a plurality of holes,
Wherein a virtual coordinate set in each of the plurality of holes passed through each of the detected at least a part of light is identified within a predetermined time interval,
Display device.
22. The method of claim 21,
Wherein the first window is transparent and the second window is opaque. 22. The method of claim 21,
Wherein the first window corresponds to a first transparency and the second window corresponds to a second transparency. 22. The method of claim 21,
Wherein the first window and the second window form at least a portion of an imaging pattern.
25. The method of claim 24,
Wherein the first circuit unit or the second circuit unit adjusts the transparency of a corresponding one of the first window and the second window to change the imaging pattern,
Display device. 26. The method of claim 25,
Wherein the sensor performs one or more combinations of proximity sensing, gesture recognition, shooting, distance sensing, position sensing, 3D image manipulation, and motion sensing based on a portion of the light. A display comprising a first set of light emitting portions, a second set of light emitting portions, and a light passing area disposed between the first set and the second set
Each of the first set and the second set emits light for sensing the external object to a first surface of the display upon receipt of a request to sense an external object, The first set comprising a first circuit portion for driving at least a portion of the light reflected by the outer object to a second surface of the display, the first set being located on the opposite side of the display, A second circuitry for driving a second set of circuitry; And
A light source that is formed on a second surface of the display or below the second surface and which is emitted from the first set or the second set to the external object and reflected by the external object, And a sensor for sensing at least a portion and obtaining an image for the object based on the sensed at least a portion of the light,
Wherein the first set and the second set each include a red light source, a green light source, and a blue light source, the first set is disposed on the first circuit unit, Wherein the second circuit part is disposed on the light passage area, the light passage area is a transparent substrate, and the first circuit part is disposed on the light passage area, the second set is disposed on the second circuit part,
The light passage region forming an imaging pattern,
Wherein the imaging pattern comprises a plurality of holes,
Wherein a virtual coordinate set in each of the plurality of holes passed through each of the detected at least a part of light is identified within a predetermined time interval,
Display device.
28. The method of claim 27,
Wherein the first set or the second set comprises an infrared light source. 29. The method of claim 28,
Wherein the first set or the second set further comprises a red light source, a green light source or a blue light source. 30. The method of claim 29,
And a pass filter disposed at least partially in the light passage region and extracting a specific light component from at least a part of the passed light. 28. The method of claim 27,
Further comprising a pass filter disposed between the light passage region and the sensor, for extracting a specific light component from at least a portion of the passed light.

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