KR-20260063946-A - Viewing Angel Switchable Display Device Including Image Data Dividing Unit

KR20260063946AKR 20260063946 AKR20260063946 AKR 20260063946AKR-20260063946-A

Abstract

The present invention provides a viewing angle switching display device comprising: a timing control unit that generates shared image data, dedicated image data, a data control signal, and a gate control signal from interface signals corresponding to mixed image data, a data enable signal, a shared data enable signal, and a dedicated data enable signal received from an image processing unit; a data driving unit that generates a shared data signal and a dedicated data signal using the shared image data, the dedicated image data, and the data control signal; a gate driving unit that generates a gate signal using the gate control signal; and a display panel that includes a shared subpixel and a dedicated subpixel and displays an image using the shared data signal, the dedicated data signal, and the gate signal.

Inventors

김상규
장수혁

Assignees

엘지디스플레이 주식회사

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (10)

A timing control unit that generates shared image data, dedicated image data, data control signal, and gate control signal from interface signals corresponding to mixed image data, a data enable signal, a shared data enable signal, and a dedicated data enable signal received from an image processing unit; A data driving unit that generates a shared data signal and a dedicated data signal using the shared video data, the dedicated video data, and the data control signal; A gate driving unit that generates a gate signal using the above gate control signal; A display panel comprising a shared subpixel and a dedicated subpixel, and displaying an image using the shared data signal, the dedicated data signal, and the gate signal. A viewing angle switching display device including
In Article 1, The above image processing unit is, A shared video data generation unit that generates the above-mentioned shared video data; A dedicated image data generation unit that generates the above-mentioned dedicated image data; A video data mixing unit that generates mixed video data by mixing the shared video data and the dedicated video data; A data enable signal generation unit that generates the data enable signal based on the start and end points of the valid intervals of the shared video data and the dedicated video data, and generates the shared data enable signal and the dedicated data enable signal from the data enable signal; A conversion unit that converts the above mixed image data, the above shared data enable signal, and the above dedicated data enable signal into serial data; A transmitter that converts the above serial data into an interface signal and transmits the interface signal to the timing control unit A viewing angle switching display device including
In Article 1, The above timing control unit is, A receiver that converts an interface signal received from the above image processing unit into serial data; An image data restoration unit that restores the mixed image data from the above serial data; A data enable signal recovery unit that recovers the data enable signal, the shared data enable signal, and the dedicated data enable signal from the serial data; An image data separation unit that separates the shared image data from the mixed image data based on the shared data enable signal and separates the dedicated image data from the mixed image data based on the dedicated data enable signal; A control signal generating unit that generates the data control signal and the gate control signal from the data enable signal. A viewing angle switching display device including
In Article 1, A viewing angle switching display device in which the resolution of the above mixed image data is the same as the resolution of the above shared image data and the above dedicated image data, respectively.
In Article 1, The mixed image corresponding to the above mixed image data includes a shared image corresponding to the above shared image data and displayed with a wide field of view in a shared area, and a dedicated image corresponding to the above dedicated image data and displayed with a narrow field of view in a dedicated area. The above shared video displays black in the above dedicated area, and The above dedicated image is a viewing angle switching display device that displays black in the above shared area.
In Article 5, The shared image data of the first section corresponding to the shared subpixel of the shared area and the shared subpixel of the dedicated area has grayscale data of the shared image, and The shared image data of the second section corresponding to the dedicated subpixel of the shared area and the dedicated subpixel of the dedicated area has the black gradation data, and The dedicated image data of the first section has the black gradation data, and The dedicated image data of the second section above is a viewing angle switching display device having grayscale data of the dedicated image.
In Article 6, The mixed image data of the first section above has the grayscale data of the shared image, and The mixed image data of the second section above is a viewing angle switching display device having the grayscale data of the dedicated image.
In Article 7, The above data enable signal has a logic high level in the first and second sections, and The shared data enable signal has a logic high level in the first section and a logic low level in the second section, The above dedicated data enable signal is a viewing angle switching display device having a logic low level in the first section and a logic high level in the second section.
In Article 1, The above shared subpixel and the above dedicated subpixel are, respectively A first transistor connected to a high-potential signal; A second transistor that is switched according to a light emission signal and connected to the first transistor; A third transistor that is switched according to the scan2 signal and connected to the first transistor; A fourth transistor that is switched according to the scan2 signal and connected to the second transistor; A fifth transistor that is switched according to the above light emission signal and connected to a reference signal; A sixth transistor that switches according to the scan 1 signal and is connected to the shared data signal or the dedicated data signal. A viewing angle switching display device including
In Article 9, The above shared subpixel and the above dedicated subpixel are, respectively A storage capacitor connected between the first, third, and sixth transistors; A light-emitting diode connected between the above second and fourth transistors and the low-potential signal A viewing angle switching display device including further

Description

Viewing Angle Switchable Display Device Including Image Data Dividing Unit The present invention relates to a display device, and more particularly to a viewing angle switching display device comprising an image data separation unit that separates mixed image data received from an image processing unit into shared image data and dedicated image data. As society has recently entered the full-scale information age, interest in information displays capable of processing and displaying large amounts of information is increasing. Furthermore, with the rising demand for portable information media, various lightweight and thin flat panel displays designed to meet these needs are being developed and are gaining attention. Among these flat panel display devices, organic light-emitting diode display devices are self-luminous devices that do not require a separate light source such as a backlight, and are widely applied in various fields because they have advantages in terms of viewing angle, contrast ratio, and power consumption. In particular, organic light-emitting diode (OLED) displays are used in vehicle dashboards, and in the automotive sector, research and development is underway on OLED displays with switching viewing angles that allow occupants in the driver's and passenger's seats to selectively view images. In a viewing angle switching organic light-emitting diode display device, a film or lens is used to display a shared image at a wide viewing angle or a dedicated image at a narrow viewing angle. Accordingly, shared image data and dedicated image data are transmitted from the image processing unit to the display device; however, as the amount of transmitted image data and the speed of the clock signal increase, there is a problem in which electromagnetic interference (EMI) characteristics deteriorate and noise is generated during the transmission process, resulting in a degradation of image display quality. FIG. 1 is a drawing illustrating a viewing angle switching display device according to an embodiment of the present invention. FIG. 2 is a circuit diagram illustrating a shared subpixel and a dedicated subpixel of a viewing angle switching display device according to an embodiment of the present invention. FIG. 3 is a drawing illustrating an image processing unit connected to a viewing angle switching display device according to an embodiment of the present invention. FIG. 4 is a diagram illustrating a timing control unit of a viewing angle switching display device according to an embodiment of the present invention. FIG. 5 is a diagram illustrating a plurality of signals of a viewing angle switching display device according to an embodiment of the present invention. FIG. 6a is a diagram illustrating a mixed image, a shared data enable signal, and a dedicated data enable signal of a viewing angle switching display device according to an embodiment of the present invention. FIGS. 6b and FIGS. 6c are drawings illustrating a shared image and a dedicated image of a viewing angle switching display device according to an embodiment of the present invention, respectively. The terms used in the embodiments of the present invention have been selected to be as widely used as possible, taking into account their functions; however, these terms may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. In specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant description section. Therefore, terms used in this specification should be defined not merely by their names, but based on their meanings and the content throughout the entire disclosure. When a part of a specification is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. The expression "at least one of a, b, and c" as used throughout the specification may encompass 'a alone', 'b alone', 'c alone', 'a and b', 'a and c', 'b and c', or 'a, b, and c all'. The advantages and features of the present invention, and the methods for achieving them, will become clear from the embodiments described below in detail together with the accompanying drawings. The shapes, areas, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are exemplary, and therefore the embodiments of this specification are not limited to the depicted details. In describing the embodiments, if it is determined that a detailed description of related known technology may unnecessarily obscure the essence of the embodiments, such detailed description is omitted. In cases where terms such as 'includes,' 'have,' or 'consists of' are used in this specification, other parts may be added. When a component is expressed in the singular, it includes cases where it includes the plural