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Some applications require images in which even slight brightness differences convey important information. This applies, among other areas, to medical imaging, microscopic analysis of metals and composites, and process monitoring. In such systems, the TFT LCD serves not only as an interface – it also supports ongoing data assessment and operation of the entire device.
One example is the EV238FH2-M00, a 23.8-inch TFT LCD featuring a panel based on ADS (Advanced Super Dimension Switch) technology developed by BOE. This technology contributes to image quality by providing, among other benefits, wide viewing angles. In this article, we cover its key specifications, the features that improve image readability and detail, and its integration options and potential applications across devices.
High contrast
One of the key distinguishing features of the EV238FH2-M00 is its high contrast ratio of 2500:1. This parameter defines the ratio between the luminance of the brightest white and the darkest black that the panel can produce.
High contrast improves the visibility of differences between bright and dark areas. As a result, contours along their boundaries are easier to distinguish, while details in darker parts of the image may be more visible. At the same time, the visibility of subtle tonal gradations depends not only on contrast but also on panel brightness, color depth, gamma characteristics, and source-material quality.
Brightness
The EV238FH2-M00 provides a typical brightness of 500 cd/m². This value is generally sufficient for indoor applications where the TFT LCD is not exposed to intense ambient light, such as medical offices, laboratories, and control centers. However, environments with particularly high light levels may require a higher-brightness model. Read more about matching this parameter to ambient conditions in our article “Ambient light and display selection – a few practical tips”.
Resolution, aspect ratio, and active area
The EV238FH2-M00 offers a resolution of 1920 × 1080 px (Full HD) with a 16:9 aspect ratio. Combined with its 23.8-inch diagonal, this provides a pixel density of approximately 93 ppi. The resolution delivers high detail, enabling clear representation of thin lines, contours, small markings, text, icons, and charts.
The active area measures 527.04 × 296.46 mm. Its size lets you display the main image, system parameters, settings, and control elements at the same time. This reduces the need to switch between multiple views and makes it easier to compare side-by-side information.
Native 8-bit color depth
The panel supports a native 8-bit color depth for each RGB channel and reproduces 16.7 million colors. Each channel can represent 256 levels, enabling smooth tonal transitions and reducing the visibility of distinct bands between adjacent shades. In practice, this makes gradual brightness changes easier to observe and helps maintain the readability of images with multiple shades of gray.
The typical NTSC color gamut coverage is 80%. This parameter also matters for interfaces with color-coded markings, charts, overlays, and messages. Clear differentiation between these elements helps users identify statuses, warnings, and highlighted areas more quickly.
Wide viewing angles
The panel used in the EV238FH2-M00 provides wide viewing angles of typically 89°/89°/89°/89° and helps reduce changes in contrast and color when viewed from different directions. This is important in applications where the TFT LCD is mounted above or below eye level, positioned at different angles, or viewed by several people simultaneously. As a result, the information remains readable without the user having to stand directly in front of the screen.
Anti-Glare coating
The TFT LCD surface features an Anti-Glare coating that diffuses incident light and reduces distinct reflections from lamps, windows, and other bright objects. As a result, reflections are less likely to obscure the presented content, improving image readability and viewing comfort.
LED backlight lifetime
The EV238FH2-M00 uses an LED backlight with a lifetime of at least 50,000 hours. This value specifies the operating time under the conditions defined in the specification, after which the backlight luminance may decrease to 50% of its initial level.
This long lifetime supports many years of operation and makes the TFT LCD well suited to devices that run many hours each day. It can also reduce the frequency of backlight-related maintenance.
Video interface and integration
The image signal is transmitted to the TFT LCD via the LVDS interface, which is widely used for communication between the panel and control electronics. It enables efficient transmission of the large amount of data required to present images in Full HD resolution. The interface’s differential operation reduces susceptibility to electromagnetic interference and supports stable transmission.
The EV238FH2-M00 uses a 30-pin LVDS interface in a dual-channel, 8-bit configuration. Connect the module to electronics with a compatible LVDS output. Therefore, consider its integration method during system electronics design.
The table below summarizes the key specifications of the EV238FH2-M00 by BOE.
| Parameter | EV238FH2-M00 |
| Size | 23.8″ |
| Outline dimensions | 535 × 309.3 mm |
| Active area | 527.04 × 296.46 mm |
| Resolution | 1920 × 1080 px (Full HD) |
| Viewing angles | 89°/89°/89°/89° typ. |
| Brightness | 500 cd/m² typ. |
| Contrast ratio | 2500:1 typ. |
| Color depth | Native 8 bits per channel, 16.7 million colors |
| Surface treatment | Anti-Glare, 3H hardness |
| Video interface | LVDS |
| Operating temperature | 0°C to +50°C |
| LED backlight lifetime | Min. 50,000 hours |
Typical applications of the EV238FH2-M00 by BOE
The EV238FH2-M00 was designed primarily for ultrasound systems – diagnostic devices that use ultrasonic waves to image organs, tissues, and other internal structures of the human body. However, its specifications also make it worth considering for other devices and workstations used indoors that require the clear presentation of images, data, and complex interfaces, including:
- medical equipment – integrated diagnostic workstations, analyzers, and devices for monitoring parameters;
- laboratory and research equipment – analyzers, microscopy workstations, measuring equipment, and data acquisition and visualization systems;
- quality control and technical diagnostics – equipment and systems for camera-based inspection of material and product surfaces, as well as the detection of internal defects using ultrasound or X-rays;
- industrial automation – operator workstations, control panels, and SCADA interfaces for monitoring production lines and processes, provided that the TFT LCD is not exposed to particularly intense ambient light;
- security and monitoring – video surveillance workstations, operator consoles, image analysis systems, and control center equipment;
- transport and logistics – indoor dispatch workstations, fleet monitoring systems, and workstations for managing warehouse and operational processes.
Always verify the module’s suitability for a specific application against the environmental, mechanical, and electrical requirements, as well as the standards applicable to the device.
Not sure whether the EV238FH2-M00 is suitable for your application? Contact us – we will help you select a solution suited to the device design, operating conditions, and planned integration method.
