A metro line adds Chinese, English, and Arabic to its platform displays. On the test screen, English reads fine, but dense Chinese characters look cramped, and some special symbols appear as empty boxes. The content team blames the font, the IT team blames the player, and nobody looks at the display itself.
This guide walks through four checks: resolution, pixel pitch, font rendering, and system compatibility. It applies to both the 24 Inch LCD Stretched Bar Display and the 43 Inch LCD Stretched Bar Display.
Chinese characters have more strokes than Latin letters, so they need more pixels and a larger font size.
Clarity depends on resolution, pixel pitch, font size, and viewing distance together, not on any one of them.
Garbled text and empty boxes usually come from fonts and encoding, not from the panel. Still, confirm system compatibility before you choose a display.
Leave room for every language in the layout, and run a sample test before a bulk order.
Why Multilingual Content Is Harder on Bar Displays
Different scripts,different demands
Chinese characters pack many strokes into a square. At small sizes, those strokes merge into a dark blob. Latin letters are simpler but wider, so the same message takes a different amount of horizontal space in each language. Arabic runs right to left, which means the player software has to handle text direction correctly, not just the screen.
The limited height of a bar screen
A stretched bar has plenty of width and very little height. Two or three languages have to share that height, either on separate lines or in separate zones. Shrink the text too far and passengers can't read it. Enlarge it and the longest station name no longer fits. Every multilingual layout on a bar LCD for passenger information system is a trade-off between these two limits.
Resolution and Pixel Pitch for Clear Characters
How many pixels does a character need
As a rule of thumb, a Chinese character needs at least 16×16 pixels to be recognizable, and 24×24 or more to look clean. Latin letters can go a little smaller, though thin fonts should still be avoided. 【Rule of thumb from common industry practice; please verify before publishing.】
This is the core of Chinese character display resolution: the pixel count per character matters more than the headline resolution number on the spec sheet.
Reference table
|
Model |
Common resolution |
Screen height (px) |
Suggested height per Chinese line |
Lines that fit (approx.) |
|
24" bar |
1920×360 |
360 |
about 48–72 px |
2–3 |
|
43" bar |
1920×480 |
480 |
about 48–80 px |
3–4 |
【Values come from geometric conversion and experience. Please check them against the panel spec sheet before publishing.】
Both sizes share the same 1920 px width. What separates them is how tall each line can be and how many lines you can stack, so the 24 Inch LCD Stretched Bar Display and the 43 Inch LCD Stretched Bar Display call for different layouts even at the same resolution.
Viewing distance still matters
The smaller the text, the shorter the distance it can be read from. On a platform, passengers read from far away, so the key message (destination, next train, delay notice) should be large, and secondary information can use a smaller size. The same rule keeps a multilingual passenger information display readable when a crowd stands between the screen and the viewer.
FontEncoding, and System Compatibility
Common causes of broken characters
The font file does not contain the character, so the screen shows an empty box.
Encoding is inconsistent between the content system and the player. UTF-8 across the whole chain avoids most of this.
The player or publishing software cannot handle complex text layout, such as right-to-left scripts.
Best practices
Pick a font that covers every target language. A sans-serif with medium stroke weight works well on screens.
Use the same font package on the content-creation side and the playback side.
If you need special symbols or right-to-left text, check them on a sample unit first.
Avoid very thin fonts and heavily decorated letterforms.
If blank boxes appear, check the font and encoding before blaming the panel. The screen draws whatever the player sends it.
Display Features That Help Text Readability
Brightness, contrast, and uniformity
Platforms and concourses with daylight or strong lighting need a high brightness stretched bar LCD for subway use. Around 700–1000 nits is common, depending on the light at the installation site. High contrast and even brightness across the panel help small characters stay sharp.
Viewing angle and surface treatment
A wide viewing angle, commonly around 178°, lets passengers standing to the side still read the text. An anti-glare surface reduces reflections on the glass that would otherwise cut through thin strokes.
Refresh and scrolling text
Scrolling captions need a stable refresh rate. Ghosting and flicker make moving Chinese characters hard to follow. Test scrolling on a sample unit, not just static pages.
24-Inch vs43-Inch for Multilingual Content
The 24 Inch LCD Stretched Bar Display suits close-range guidance, such as above gates or at entrances. Keep the content short, and show one or two languages per screen.
The 43 Inch LCD Stretched Bar Display has more height and a longer readable distance. It fits platforms and halls, and it can hold more lines of text.
Both can run at 1920 px width. The real work is in the character height and line spacing, not in chasing a bigger resolution number.
Testing Before You Order
A simple pilot test
Prepare real multilingual content, including the longest station name and any special symbols.
View the sample at the real viewing distance and under real lighting.
Ask people of different ages to read it, and note which characters give them trouble.
Check player compatibility, font loading, and scrolling behavior.
Adjust font size and layout, then confirm the final specification.
This is where most problems show up, and it costs far less than finding them after delivery.
Choosing a Reliable Stretched Bar LCD Manufacturer
When you compare suppliers, look at four things: experience on transit projects, support for non-standard resolutions, customization ability, and willingness to cooperate on sample testing.
A stretched bar LCD display manufacturer that works on transit projects will usually ask about your content before quoting. If you are sourcing in volume, a stretched bar LCD factory that can run your own text on a sample unit lets you catch layout problems early. For buyers planning a larger rollout, wholesale stretched bar LCD for transit orders go smoother when specifications are fixed after the pilot, not before. And a custom bar LCD display supplier should be able to adjust size, brightness, and interface to match your project instead of pushing a standard model.
【Add one real example from your company here: for instance, a customer who found during sample testing that the Chinese font size was too small and adjusted it in time. Please use a true case.】
【ESTA: if you send me the specific news item or link, I will add one or two sentences referring to it. I have left it out so nothing is invented.】
Start with how dense the characters are, then use resolution, character height, and viewing distance to settle on clarity. Garbled text mostly comes from fonts and encoding, so keep UTF-8 throughout and check player compatibility. Before a bulk order, test with real content. That puts the engineers and the content team on the same screen, which is how the mismatch in the opening example gets resolved.
FAQ
Q: What resolution is needed to display Chinese characters clearly on a bar LCD?
A: A width of 1920 px is usually enough. The deciding factor is character height, and a single line of Chinese text should generally stay above about 48 px (rule of thumb).
Q: Why do some characters appear as empty boxes?
A: Almost always a missing glyph in the font or an encoding mismatch, not a faulty screen.
Q: Can a 24 inch stretched bar display show two languages at once?
A: Yes. Split the screen into two lines or two zones, and keep the font size high enough to stay readable.
Q: Is a 43 inch bar display better for multilingual platforms?
A: It offers more height, so it handles more lines and longer reading distances better.
Q: Can I test my own content on a sample before ordering?
A: Yes, and it is the recommended step. Check font size and compatibility with your real content on site
Planning a Multilingual Display Lets Test Your Content Together
If you are preparing a multilingual passenger information project, our team can review your content layout, suggest a suitable resolution and brightness, and arrange samples so you can test your own text on screen. Send us your longest station name and we will start from there
